Здравствуйте! Используя Ip.Content и большие новости, решил придать им класс с overflow:auto; max-height:300px; ,но стандартный скроллбар некрасивый, походя по инету нашёл jScrollPane,JQ скрипт настройки скроллбаров, всё бы хорошо,но в нём нужно указывать фиксированную высоту (height), при вставке max-height, скроллбар просто не отображается! Можно ли как-то это исправить (применить max-height)? Заранее спасибо!
Сам скрипт:
/* Copyright (c) 2006 Kelvin Luck (kelvin AT kelvinluck DOT com || http://www.kelvinluck.com)
* Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
* and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
*
* See http://kelvinluck.com/assets/jquery/jScrollPane/
* $Id: jScrollPane.js 24 2008-11-29 07:08:14Z kelvin.luck $
*/
/**
* Replace the vertical scroll bars on any matched elements with a fancy
* styleable (via CSS) version. With JS disabled the elements will
* gracefully degrade to the browsers own implementation of overflow:auto.
* If the mousewheel plugin has been included on the page then the scrollable areas will also
* respond to the mouse wheel.
*
* @example jQuery(".scroll-pane").jScrollPane();
*
* @name jScrollPane
* @type jQuery
* @param Object settings hash with options, described below.
* scrollbarWidth - The width of the generated scrollbar in pixels
* scrollbarMargin - The amount of space to leave on the side of the scrollbar in pixels
* wheelSpeed - The speed the pane will scroll in response to the mouse wheel in pixels
* showArrows - Whether to display arrows for the user to scroll with
* arrowSize - The height of the arrow buttons if showArrows=true
* animateTo - Whether to animate when calling scrollTo and scrollBy
* dragMinHeight - The minimum height to allow the drag bar to be
* dragMaxHeight - The maximum height to allow the drag bar to be
* animateInterval - The interval in milliseconds to update an animating scrollPane (default 100)
* animateStep - The amount to divide the remaining scroll distance by when animating (default 3)
* maintainPosition- Whether you want the contents of the scroll pane to maintain it's position when you re-initialise it - so it doesn't scroll as you add more content (default true)
* scrollbarOnLeft - Display the scrollbar on the left side? (needs stylesheet changes, see examples.html)
* reinitialiseOnImageLoad - Whether the jScrollPane should automatically re-initialise itself when any contained images are loaded
* @return jQuery
* @cat Plugins/jScrollPane
* @author Kelvin Luck (kelvin AT kelvinluck DOT com || http://www.kelvinluck.com)
*/
(function($) {
$.jScrollPane = {
active : []
};
$.fn.jScrollPane = function(settings)
{
settings = $.extend({}, $.fn.jScrollPane.defaults, settings);
var rf = function() { return false; };
return this.each(
function()
{
var $this = $(this);
// Switch the element's overflow to hidden to ensure we get the size of the element without the scrollbars [http://plugins.jquery.com/node/1208]
$this.css('overflow', 'hidden');
var paneEle = this;
if ($(this).parent().is('.jScrollPaneContainer')) {
var currentScrollPosition = settings.maintainPosition ? $this.offset({relativeTo:$(this).parent()[0]}).top : 0;
var $c = $(this).parent();
var paneWidth = $c.innerWidth();
var paneHeight = $c.outerHeight();
var trackHeight = paneHeight;
$('>.jScrollPaneTrack, >.jScrollArrowUp, >.jScrollArrowDown', $c).remove();
$this.css({'top':0});
} else {
var currentScrollPosition = 0;
this.originalPadding = $this.css('paddingTop') + ' ' + $this.css('paddingRight') + ' ' + $this.css('paddingBottom') + ' ' + $this.css('paddingLeft');
this.originalSidePaddingTotal = (parseInt($this.css('paddingLeft')) || 0) + (parseInt($this.css('paddingRight')) || 0);
var paneWidth = $this.innerWidth();
var paneHeight = $this.innerHeight();
var trackHeight = paneHeight;
$this.wrap(
$('<div></div>').attr(
{'className':'jScrollPaneContainer'}
).css(
{
'height':paneHeight+'px',
'width':paneWidth+'px'
}
)
);
// deal with text size changes (if the jquery.em plugin is included)
// and re-initialise the scrollPane so the track maintains the
// correct size
$(document).bind(
'emchange',
function(e, cur, prev)
{
$this.jScrollPane(settings);
}
);
}
if (settings.reinitialiseOnImageLoad) {
// code inspired by jquery.onImagesLoad: http://plugins.jquery.com/project/onImagesLoad
// except we re-initialise the scroll pane when each image loads so that the scroll pane is always up to size...
// TODO: Do I even need to store it in $.data? Is a local variable here the same since I don't pass the reinitialiseOnImageLoad when I re-initialise?
var $imagesToLoad = $.data(paneEle, 'jScrollPaneImagesToLoad') || $('img', $this);
var loadedImages = [];
if ($imagesToLoad.length) {
$imagesToLoad.each(function(i, val) {
$(this).bind('load', function() {
if($.inArray(i, loadedImages) == -1){ //don't double count images
loadedImages.push(val); //keep a record of images we've seen
$imagesToLoad = $.grep($imagesToLoad, function(n, i) {
return n != val;
});
$.data(paneEle, 'jScrollPaneImagesToLoad', $imagesToLoad);
settings.reinitialiseOnImageLoad = false;
$this.jScrollPane(settings); // re-initialise
}
}).each(function(i, val) {
if(this.complete || this.complete===undefined) {
//needed for potential cached images
this.src = this.src;
}
});
});
};
}
var p = this.originalSidePaddingTotal;
var cssToApply = {
'height':'auto',
'width':paneWidth - settings.scrollbarWidth - settings.scrollbarMargin - p + 'px'
}
if(settings.scrollbarOnLeft) {
cssToApply.paddingLeft = settings.scrollbarMargin + settings.scrollbarWidth + 'px';
} else {
cssToApply.paddingRight = settings.scrollbarMargin + 'px';
}
$this.css(cssToApply);
var contentHeight = $this.outerHeight();
var percentInView = paneHeight / contentHeight;
if (percentInView < .99) {
var $container = $this.parent();
$container.append(
$('<div></div>').attr({'className':'jScrollPaneTrack'}).css({'width':settings.scrollbarWidth+'px'}).append(
$('<div></div>').attr({'className':'jScrollPaneDrag'}).css({'width':settings.scrollbarWidth+'px'}).append(
$('<div></div>').attr({'className':'jScrollPaneDragTop'}).css({'width':settings.scrollbarWidth+'px'}),
$('<div></div>').attr({'className':'jScrollPaneDragBottom'}).css({'width':settings.scrollbarWidth+'px'})
)
)
);
var $track = $('>.jScrollPaneTrack', $container);
var $drag = $('>.jScrollPaneTrack .jScrollPaneDrag', $container);
if (settings.showArrows) {
var currentArrowButton;
var currentArrowDirection;
var currentArrowInterval;
var currentArrowInc;
var whileArrowButtonDown = function()
{
if (currentArrowInc > 4 || currentArrowInc%4==0) {
positionDrag(dragPosition + currentArrowDirection * mouseWheelMultiplier);
}
currentArrowInc ++;
};
var onArrowMouseUp = function(event)
{
$('html').unbind('mouseup', onArrowMouseUp);
currentArrowButton.removeClass('jScrollActiveArrowButton');
clearInterval(currentArrowInterval);
};
var onArrowMouseDown = function() {
$('html').bind('mouseup', onArrowMouseUp);
currentArrowButton.addClass('jScrollActiveArrowButton');
currentArrowInc = 0;
whileArrowButtonDown();
currentArrowInterval = setInterval(whileArrowButtonDown, 100);
};
$container
.append(
$('<a></a>')
.attr({'href':'javascript:;', 'className':'jScrollArrowUp'})
.css({'width':settings.scrollbarWidth+'px'})
.html('Scroll up')
.bind('mousedown', function()
{
currentArrowButton = $(this);
currentArrowDirection = -1;
onArrowMouseDown();
this.blur();
return false;
})
.bind('click', rf),
$('<a></a>')
.attr({'href':'javascript:;', 'className':'jScrollArrowDown'})
.css({'width':settings.scrollbarWidth+'px'})
.html('Scroll down')
.bind('mousedown', function()
{
currentArrowButton = $(this);
currentArrowDirection = 1;
onArrowMouseDown();
this.blur();
return false;
})
.bind('click', rf)
);
var $upArrow = $('>.jScrollArrowUp', $container);
var $downArrow = $('>.jScrollArrowDown', $container);
if (settings.arrowSize) {
trackHeight = paneHeight - settings.arrowSize - settings.arrowSize;
$track
.css({'height': trackHeight+'px', top:settings.arrowSize+'px'})
} else {
var topArrowHeight = $upArrow.height();
settings.arrowSize = topArrowHeight;
trackHeight = paneHeight - topArrowHeight - $downArrow.height();
$track
.css({'height': trackHeight+'px', top:topArrowHeight+'px'})
}
}
var $pane = $(this).css({'position':'absolute', 'overflow':'visible'});
var currentOffset;
var maxY;
var mouseWheelMultiplier;
// store this in a seperate variable so we can keep track more accurately than just updating the css property..
var dragPosition = 0;
var dragMiddle = percentInView*paneHeight/2;
// pos function borrowed from tooltip plugin and adapted...
var getPos = function (event, c) {
var p = c == 'X' ? 'Left' : 'Top';
return event['page' + c] || (event['client' + c] + (document.documentElement['scroll' + p] || document.body['scroll' + p])) || 0;
};
var ignoreNativeDrag = function() { return false; };
var initDrag = function()
{
ceaseAnimation();
currentOffset = $drag.offset(false);
currentOffset.top -= dragPosition;
maxY = trackHeight - $drag[0].offsetHeight;
mouseWheelMultiplier = 2 * settings.wheelSpeed * maxY / contentHeight;
};
var onStartDrag = function(event)
{
initDrag();
dragMiddle = getPos(event, 'Y') - dragPosition - currentOffset.top;
$('html').bind('mouseup', onStopDrag).bind('mousemove', updateScroll);
if ($.browser.msie) {
$('html').bind('dragstart', ignoreNativeDrag).bind('selectstart', ignoreNativeDrag);
}
return false;
};
var onStopDrag = function()
{
$('html').unbind('mouseup', onStopDrag).unbind('mousemove', updateScroll);
dragMiddle = percentInView*paneHeight/2;
if ($.browser.msie) {
$('html').unbind('dragstart', ignoreNativeDrag).unbind('selectstart', ignoreNativeDrag);
}
};
var positionDrag = function(destY)
{
destY = destY < 0 ? 0 : (destY > maxY ? maxY : destY);
dragPosition = destY;
$drag.css({'top':destY+'px'});
var p = destY / maxY;
$pane.css({'top';)(paneHeight-contentHeight)*p) + 'px'});
$this.trigger('scroll');
if (settings.showArrows) {
$upArrow[destY == 0 ? 'addClass' : 'removeClass']('disabled');
$downArrow[destY == maxY ? 'addClass' : 'removeClass']('disabled');
}
};
var updateScroll = function(e)
{
positionDrag(getPos(e, 'Y') - currentOffset.top - dragMiddle);
};
var dragH = Math.max(Math.min(percentInView*(paneHeight-settings.arrowSize*2), settings.dragMaxHeight), settings.dragMinHeight);
$drag.css(
{'height':dragH+'px'}
).bind('mousedown', onStartDrag);
var trackScrollInterval;
var trackScrollInc;
var trackScrollMousePos;
var doTrackScroll = function()
{
if (trackScrollInc > 8 || trackScrollInc%4==0) {
positionDrag((dragPosition - ((dragPosition - trackScrollMousePos) / 2)));
}
trackScrollInc ++;
};
var onStopTrackClick = function()
{
clearInterval(trackScrollInterval);
$('html').unbind('mouseup', onStopTrackClick).unbind('mousemove', onTrackMouseMove);
};
var onTrackMouseMove = function(event)
{
trackScrollMousePos = getPos(event, 'Y') - currentOffset.top - dragMiddle;
};
var onTrackClick = function(event)
{
initDrag();
onTrackMouseMove(event);
trackScrollInc = 0;
$('html').bind('mouseup', onStopTrackClick).bind('mousemove', onTrackMouseMove);
trackScrollInterval = setInterval(doTrackScroll, 100);
doTrackScroll();
};
$track.bind('mousedown', onTrackClick);
$container.bind(
'mousewheel',
function (event, delta) {
initDrag();
ceaseAnimation();
var d = dragPosition;
positionDrag(dragPosition - delta * mouseWheelMultiplier);
var dragOccured = d != dragPosition;
return !dragOccured;
}
);
var _animateToPosition;
var _animateToInterval;
function animateToPosition()
{
var diff = (_animateToPosition - dragPosition) / settings.animateStep;
if (diff > 1 || diff < -1) {
positionDrag(dragPosition + diff);
} else {
positionDrag(_animateToPosition);
ceaseAnimation();
}
}
var ceaseAnimation = function()
{
if (_animateToInterval) {
clearInterval(_animateToInterval);
delete _animateToPosition;
}
};
var scrollTo = function(pos, preventAni)
{
if (typeof pos == "string") {
$e = $(pos, this);
if (!$e.length) return;
pos = $e.offset().top - $this.offset().top;
}
ceaseAnimation();
var destDragPosition = -pos/(paneHeight-contentHeight) * maxY;
if (preventAni || !settings.animateTo) {
positionDrag(destDragPosition);
} else {
_animateToPosition = destDragPosition;
_animateToInterval = setInterval(animateToPosition, settings.animateInterval);
}
};
$this[0].scrollTo = scrollTo;
$this[0].scrollBy = function(delta)
{
var currentPos = -parseInt($pane.css('top')) || 0;
scrollTo(currentPos + delta);
};
initDrag();
scrollTo(-currentScrollPosition, true);
// Deal with it when the user tabs to a link or form element within this scrollpane
$('*', this).bind(
'focus',
function(event)
{
var eleTop = $(this).position().top;
var viewportTop = -parseInt($pane.css('top')) || 0;
var maxVisibleEleTop = viewportTop + paneHeight;
var eleInView = eleTop > viewportTop && eleTop < maxVisibleEleTop;
if (!eleInView) {
$container.scrollTop(0);
var destPos = eleTop - settings.scrollbarMargin;
if (eleTop > viewportTop) { // element is below viewport - scroll so it is at bottom.
destPos += $(this).height() + 15+ settings.scrollbarMargin - paneHeight;
}
scrollTo(destPos);
}
}
)
if (location.hash) {
// the timeout needs to be longer in IE when not loading from cache...
setTimeout(function() {
$(location.hash, $this).trigger('focus');
}, $.browser.msie ? 100 : 0);
}
// use event delegation to listen for all clicks on links and hijack them if they are links to
// anchors within our content...
$(document).bind(
'click',
function(e)
{
$target = $(e.target);
if ($target.is('a')) {
var h = $target.attr('href');
if (h.substr(0, 1) == '#') {
$linkedEle = $(h, $this);
if ($linkedEle.length) {
$linkedEle.trigger('focus');
return false;
}
}
}
}
);
$.jScrollPane.active.push($this[0]);
} else {
$this.css(
{
'height':paneHeight+'px',
'width':paneWidth-this.originalSidePaddingTotal+'px',
'padding':this.originalPadding
}
);
// remove from active list?
}
}
)
};
$.fn.jScrollPane.defaults = {
scrollbarWidth : 10,
scrollbarMargin : 5,
wheelSpeed : 18,
showArrows : false,
arrowSize : 0,
animateTo : false,
dragMinHeight : 1,
dragMaxHeight : 99999,
animateInterval : 100,
animateStep: 3,
maintainPosition: true,
scrollbarOnLeft: false,
reinitialiseOnImageLoad: false
};
// clean up the scrollTo expandos
$(window)
.bind('unload', function() {
var els = $.jScrollPane.active;
for (var i=0; i<els.length; i++) {
els[i].scrollTo = els[i].scrollBy = null;
}
}
);
})(jQuery);
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Здравствуйте! Используя Ip.Content и большие новости, решил придать им класс с overflow:auto; max-height:300px; ,но стандартный скроллбар некрасивый, походя по инету нашёл jScrollPane,JQ скрипт настройки скроллбаров, всё бы хорошо,но в нём нужно указывать фиксированную высоту (height), при вставке max-height, скроллбар просто не отображается! Можно ли как-то это исправить (применить max-height)? Заранее спасибо!
Сам скрипт:
/* Copyright (c) 2006 Kelvin Luck (kelvin AT kelvinluck DOT com || http://www.kelvinluck.com) * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses. * * See http://kelvinluck.com/assets/jquery/jScrollPane/ * $Id: jScrollPane.js 24 2008-11-29 07:08:14Z kelvin.luck $ */ /** * Replace the vertical scroll bars on any matched elements with a fancy * styleable (via CSS) version. With JS disabled the elements will * gracefully degrade to the browsers own implementation of overflow:auto. * If the mousewheel plugin has been included on the page then the scrollable areas will also * respond to the mouse wheel. * * @example jQuery(".scroll-pane").jScrollPane(); * * @name jScrollPane * @type jQuery * @param Object settings hash with options, described below. * scrollbarWidth - The width of the generated scrollbar in pixels * scrollbarMargin - The amount of space to leave on the side of the scrollbar in pixels * wheelSpeed - The speed the pane will scroll in response to the mouse wheel in pixels * showArrows - Whether to display arrows for the user to scroll with * arrowSize - The height of the arrow buttons if showArrows=true * animateTo - Whether to animate when calling scrollTo and scrollBy * dragMinHeight - The minimum height to allow the drag bar to be * dragMaxHeight - The maximum height to allow the drag bar to be * animateInterval - The interval in milliseconds to update an animating scrollPane (default 100) * animateStep - The amount to divide the remaining scroll distance by when animating (default 3) * maintainPosition- Whether you want the contents of the scroll pane to maintain it's position when you re-initialise it - so it doesn't scroll as you add more content (default true) * scrollbarOnLeft - Display the scrollbar on the left side? (needs stylesheet changes, see examples.html) * reinitialiseOnImageLoad - Whether the jScrollPane should automatically re-initialise itself when any contained images are loaded * @return jQuery * @cat Plugins/jScrollPane * @author Kelvin Luck (kelvin AT kelvinluck DOT com || http://www.kelvinluck.com) */ (function($) { $.jScrollPane = { active : [] }; $.fn.jScrollPane = function(settings) { settings = $.extend({}, $.fn.jScrollPane.defaults, settings); var rf = function() { return false; }; return this.each( function() { var $this = $(this); // Switch the element's overflow to hidden to ensure we get the size of the element without the scrollbars [http://plugins.jquery.com/node/1208] $this.css('overflow', 'hidden'); var paneEle = this; if ($(this).parent().is('.jScrollPaneContainer')) { var currentScrollPosition = settings.maintainPosition ? $this.offset({relativeTo:$(this).parent()[0]}).top : 0; var $c = $(this).parent(); var paneWidth = $c.innerWidth(); var paneHeight = $c.outerHeight(); var trackHeight = paneHeight; $('>.jScrollPaneTrack, >.jScrollArrowUp, >.jScrollArrowDown', $c).remove(); $this.css({'top':0}); } else { var currentScrollPosition = 0; this.originalPadding = $this.css('paddingTop') + ' ' + $this.css('paddingRight') + ' ' + $this.css('paddingBottom') + ' ' + $this.css('paddingLeft'); this.originalSidePaddingTotal = (parseInt($this.css('paddingLeft')) || 0) + (parseInt($this.css('paddingRight')) || 0); var paneWidth = $this.innerWidth(); var paneHeight = $this.innerHeight(); var trackHeight = paneHeight; $this.wrap( $('<div></div>').attr( {'className':'jScrollPaneContainer'} ).css( { 'height':paneHeight+'px', 'width':paneWidth+'px' } ) ); // deal with text size changes (if the jquery.em plugin is included) // and re-initialise the scrollPane so the track maintains the // correct size $(document).bind( 'emchange', function(e, cur, prev) { $this.jScrollPane(settings); } ); } if (settings.reinitialiseOnImageLoad) { // code inspired by jquery.onImagesLoad: http://plugins.jquery.com/project/onImagesLoad // except we re-initialise the scroll pane when each image loads so that the scroll pane is always up to size... // TODO: Do I even need to store it in $.data? Is a local variable here the same since I don't pass the reinitialiseOnImageLoad when I re-initialise? var $imagesToLoad = $.data(paneEle, 'jScrollPaneImagesToLoad') || $('img', $this); var loadedImages = []; if ($imagesToLoad.length) { $imagesToLoad.each(function(i, val) { $(this).bind('load', function() { if($.inArray(i, loadedImages) == -1){ //don't double count images loadedImages.push(val); //keep a record of images we've seen $imagesToLoad = $.grep($imagesToLoad, function(n, i) { return n != val; }); $.data(paneEle, 'jScrollPaneImagesToLoad', $imagesToLoad); settings.reinitialiseOnImageLoad = false; $this.jScrollPane(settings); // re-initialise } }).each(function(i, val) { if(this.complete || this.complete===undefined) { //needed for potential cached images this.src = this.src; } }); }); }; } var p = this.originalSidePaddingTotal; var cssToApply = { 'height':'auto', 'width':paneWidth - settings.scrollbarWidth - settings.scrollbarMargin - p + 'px' } if(settings.scrollbarOnLeft) { cssToApply.paddingLeft = settings.scrollbarMargin + settings.scrollbarWidth + 'px'; } else { cssToApply.paddingRight = settings.scrollbarMargin + 'px'; } $this.css(cssToApply); var contentHeight = $this.outerHeight(); var percentInView = paneHeight / contentHeight; if (percentInView < .99) { var $container = $this.parent(); $container.append( $('<div></div>').attr({'className':'jScrollPaneTrack'}).css({'width':settings.scrollbarWidth+'px'}).append( $('<div></div>').attr({'className':'jScrollPaneDrag'}).css({'width':settings.scrollbarWidth+'px'}).append( $('<div></div>').attr({'className':'jScrollPaneDragTop'}).css({'width':settings.scrollbarWidth+'px'}), $('<div></div>').attr({'className':'jScrollPaneDragBottom'}).css({'width':settings.scrollbarWidth+'px'}) ) ) ); var $track = $('>.jScrollPaneTrack', $container); var $drag = $('>.jScrollPaneTrack .jScrollPaneDrag', $container); if (settings.showArrows) { var currentArrowButton; var currentArrowDirection; var currentArrowInterval; var currentArrowInc; var whileArrowButtonDown = function() { if (currentArrowInc > 4 || currentArrowInc%4==0) { positionDrag(dragPosition + currentArrowDirection * mouseWheelMultiplier); } currentArrowInc ++; }; var onArrowMouseUp = function(event) { $('html').unbind('mouseup', onArrowMouseUp); currentArrowButton.removeClass('jScrollActiveArrowButton'); clearInterval(currentArrowInterval); }; var onArrowMouseDown = function() { $('html').bind('mouseup', onArrowMouseUp); currentArrowButton.addClass('jScrollActiveArrowButton'); currentArrowInc = 0; whileArrowButtonDown(); currentArrowInterval = setInterval(whileArrowButtonDown, 100); }; $container .append( $('<a></a>') .attr({'href':'javascript:;', 'className':'jScrollArrowUp'}) .css({'width':settings.scrollbarWidth+'px'}) .html('Scroll up') .bind('mousedown', function() { currentArrowButton = $(this); currentArrowDirection = -1; onArrowMouseDown(); this.blur(); return false; }) .bind('click', rf), $('<a></a>') .attr({'href':'javascript:;', 'className':'jScrollArrowDown'}) .css({'width':settings.scrollbarWidth+'px'}) .html('Scroll down') .bind('mousedown', function() { currentArrowButton = $(this); currentArrowDirection = 1; onArrowMouseDown(); this.blur(); return false; }) .bind('click', rf) ); var $upArrow = $('>.jScrollArrowUp', $container); var $downArrow = $('>.jScrollArrowDown', $container); if (settings.arrowSize) { trackHeight = paneHeight - settings.arrowSize - settings.arrowSize; $track .css({'height': trackHeight+'px', top:settings.arrowSize+'px'}) } else { var topArrowHeight = $upArrow.height(); settings.arrowSize = topArrowHeight; trackHeight = paneHeight - topArrowHeight - $downArrow.height(); $track .css({'height': trackHeight+'px', top:topArrowHeight+'px'}) } } var $pane = $(this).css({'position':'absolute', 'overflow':'visible'}); var currentOffset; var maxY; var mouseWheelMultiplier; // store this in a seperate variable so we can keep track more accurately than just updating the css property.. var dragPosition = 0; var dragMiddle = percentInView*paneHeight/2; // pos function borrowed from tooltip plugin and adapted... var getPos = function (event, c) { var p = c == 'X' ? 'Left' : 'Top'; return event['page' + c] || (event['client' + c] + (document.documentElement['scroll' + p] || document.body['scroll' + p])) || 0; }; var ignoreNativeDrag = function() { return false; }; var initDrag = function() { ceaseAnimation(); currentOffset = $drag.offset(false); currentOffset.top -= dragPosition; maxY = trackHeight - $drag[0].offsetHeight; mouseWheelMultiplier = 2 * settings.wheelSpeed * maxY / contentHeight; }; var onStartDrag = function(event) { initDrag(); dragMiddle = getPos(event, 'Y') - dragPosition - currentOffset.top; $('html').bind('mouseup', onStopDrag).bind('mousemove', updateScroll); if ($.browser.msie) { $('html').bind('dragstart', ignoreNativeDrag).bind('selectstart', ignoreNativeDrag); } return false; }; var onStopDrag = function() { $('html').unbind('mouseup', onStopDrag).unbind('mousemove', updateScroll); dragMiddle = percentInView*paneHeight/2; if ($.browser.msie) { $('html').unbind('dragstart', ignoreNativeDrag).unbind('selectstart', ignoreNativeDrag); } }; var positionDrag = function(destY) { destY = destY < 0 ? 0 : (destY > maxY ? maxY : destY); dragPosition = destY; $drag.css({'top':destY+'px'}); var p = destY / maxY; $pane.css({'top';)(paneHeight-contentHeight)*p) + 'px'}); $this.trigger('scroll'); if (settings.showArrows) { $upArrow[destY == 0 ? 'addClass' : 'removeClass']('disabled'); $downArrow[destY == maxY ? 'addClass' : 'removeClass']('disabled'); } }; var updateScroll = function(e) { positionDrag(getPos(e, 'Y') - currentOffset.top - dragMiddle); }; var dragH = Math.max(Math.min(percentInView*(paneHeight-settings.arrowSize*2), settings.dragMaxHeight), settings.dragMinHeight); $drag.css( {'height':dragH+'px'} ).bind('mousedown', onStartDrag); var trackScrollInterval; var trackScrollInc; var trackScrollMousePos; var doTrackScroll = function() { if (trackScrollInc > 8 || trackScrollInc%4==0) { positionDrag((dragPosition - ((dragPosition - trackScrollMousePos) / 2))); } trackScrollInc ++; }; var onStopTrackClick = function() { clearInterval(trackScrollInterval); $('html').unbind('mouseup', onStopTrackClick).unbind('mousemove', onTrackMouseMove); }; var onTrackMouseMove = function(event) { trackScrollMousePos = getPos(event, 'Y') - currentOffset.top - dragMiddle; }; var onTrackClick = function(event) { initDrag(); onTrackMouseMove(event); trackScrollInc = 0; $('html').bind('mouseup', onStopTrackClick).bind('mousemove', onTrackMouseMove); trackScrollInterval = setInterval(doTrackScroll, 100); doTrackScroll(); }; $track.bind('mousedown', onTrackClick); $container.bind( 'mousewheel', function (event, delta) { initDrag(); ceaseAnimation(); var d = dragPosition; positionDrag(dragPosition - delta * mouseWheelMultiplier); var dragOccured = d != dragPosition; return !dragOccured; } ); var _animateToPosition; var _animateToInterval; function animateToPosition() { var diff = (_animateToPosition - dragPosition) / settings.animateStep; if (diff > 1 || diff < -1) { positionDrag(dragPosition + diff); } else { positionDrag(_animateToPosition); ceaseAnimation(); } } var ceaseAnimation = function() { if (_animateToInterval) { clearInterval(_animateToInterval); delete _animateToPosition; } }; var scrollTo = function(pos, preventAni) { if (typeof pos == "string") { $e = $(pos, this); if (!$e.length) return; pos = $e.offset().top - $this.offset().top; } ceaseAnimation(); var destDragPosition = -pos/(paneHeight-contentHeight) * maxY; if (preventAni || !settings.animateTo) { positionDrag(destDragPosition); } else { _animateToPosition = destDragPosition; _animateToInterval = setInterval(animateToPosition, settings.animateInterval); } }; $this[0].scrollTo = scrollTo; $this[0].scrollBy = function(delta) { var currentPos = -parseInt($pane.css('top')) || 0; scrollTo(currentPos + delta); }; initDrag(); scrollTo(-currentScrollPosition, true); // Deal with it when the user tabs to a link or form element within this scrollpane $('*', this).bind( 'focus', function(event) { var eleTop = $(this).position().top; var viewportTop = -parseInt($pane.css('top')) || 0; var maxVisibleEleTop = viewportTop + paneHeight; var eleInView = eleTop > viewportTop && eleTop < maxVisibleEleTop; if (!eleInView) { $container.scrollTop(0); var destPos = eleTop - settings.scrollbarMargin; if (eleTop > viewportTop) { // element is below viewport - scroll so it is at bottom. destPos += $(this).height() + 15+ settings.scrollbarMargin - paneHeight; } scrollTo(destPos); } } ) if (location.hash) { // the timeout needs to be longer in IE when not loading from cache... setTimeout(function() { $(location.hash, $this).trigger('focus'); }, $.browser.msie ? 100 : 0); } // use event delegation to listen for all clicks on links and hijack them if they are links to // anchors within our content... $(document).bind( 'click', function(e) { $target = $(e.target); if ($target.is('a')) { var h = $target.attr('href'); if (h.substr(0, 1) == '#') { $linkedEle = $(h, $this); if ($linkedEle.length) { $linkedEle.trigger('focus'); return false; } } } } ); $.jScrollPane.active.push($this[0]); } else { $this.css( { 'height':paneHeight+'px', 'width':paneWidth-this.originalSidePaddingTotal+'px', 'padding':this.originalPadding } ); // remove from active list? } } ) }; $.fn.jScrollPane.defaults = { scrollbarWidth : 10, scrollbarMargin : 5, wheelSpeed : 18, showArrows : false, arrowSize : 0, animateTo : false, dragMinHeight : 1, dragMaxHeight : 99999, animateInterval : 100, animateStep: 3, maintainPosition: true, scrollbarOnLeft: false, reinitialiseOnImageLoad: false }; // clean up the scrollTo expandos $(window) .bind('unload', function() { var els = $.jScrollPane.active; for (var i=0; i<els.length; i++) { els[i].scrollTo = els[i].scrollBy = null; } } ); })(jQuery);