//**************************************************************
// jQZoom allows you to realize a small magnifier window,close
// to the image or images on your web page easily.
//
// jqZoom version 2.2
// Author Doc. Ing. Renzi Marco(www.mind-projects.it)
// First Release on Dec 05 2007
// i\'m looking for a job,pick me up!!!
// mail: renzi.mrc@gmail.com
//**************************************************************
(function ($) {
$.fn.jqueryzoom = function (options) {
var settings = {
xzoom: 200, //zoomed width default width
yzoom: 200, //zoomed div default width
offset: 10, //zoomed div default offset
position: \"right\",//zoomed div default position,offset position is to the right of the image
lens: 1, //zooming lens over the image,by default is 1;
preload: 1
};
if (options)
{
$.extend(settings, options);
}
var noalt = \'\';
$(this).hover(function () {
var imageLeft = $(this).offset().left;
var imageTop = $(this).offset().top;
var imageWidth = $(this).children(\'img\').get(0).offsetWidth;
var imageHeight = $(this).children(\'img\').get(0).offsetHeight;
noalt = $(this).children(\"img\").attr(\"alt\");
var bigimage = $(this).children(\"img\").attr(\"jqimg\");
$(this).children(\"img\").attr(\"alt\", \'\');
if ($(\"div.zoomdiv\").get().length == 0)
{
$(this).after(\"<div class=\'zoomdiv\'><img class=\'bigimg\' src=\'\" + bigimage + \"\'/></div>\");
$(this).append(\"<div class=\'jqZoomPup\'> </div>\");
}
if (settings.position == \"right\")
{
if (imageLeft + imageWidth + settings.offset + settings.xzoom > screen.width)
{
leftpos = imageLeft - settings.offset - settings.xzoom;
} else
{
leftpos = imageLeft + imageWidth + settings.offset;
}
} else
{
leftpos = imageLeft - settings.xzoom - settings.offset;
if (leftpos < 0)
{
leftpos = imageLeft + imageWidth + settings.offset;
}
}
$(\"div.zoomdiv\").css({ top: imageTop, left: leftpos });
$(\"div.zoomdiv\").width(settings.xzoom);
$(\"div.zoomdiv\").height(settings.yzoom);
$(\"div.zoomdiv\").show();
if (!settings.lens)
{
$(this).css(\'cursor\', \'crosshair\');
}
$(document.body).mousemove(function (e) {
mouse = new MouseEvent(e);
/*$(\"div.jqZoomPup\").hide();*/
var bigwidth = $(\".bigimg\").get(0).offsetWidth;
var bigheight = $(\".bigimg\").get(0).offsetHeight;
var scaley = \'x\';
var scalex = \'y\';
if (isNaN(scalex) | isNaN(scaley))
{
var scalex = (bigwidth / imageWidth);
var scaley = (bigheight / imageHeight);
$(\"div.jqZoomPup\").width((settings.xzoom) / scalex);
$(\"div.jqZoomPup\").height((settings.yzoom) / scaley);
if (settings.lens)
{
$(\"div.jqZoomPup\").css(\'visibility\', \'visible\');
}
}
xpos = mouse.x - $(\"div.jqZoomPup\").width() / 2 - imageLeft;
ypos = mouse.y - $(\"div.jqZoomPup\").height() / 2 - imageTop;
if (settings.lens)
{
xpos = (mouse.x - $(\"div.jqZoomPup\").width() / 2 < imageLeft) ? 0 : (mouse.x + $(\"div.jqZoomPup\").width() / 2 > imageWidth + imageLeft) ? (imageWidth - $(\"div.jqZoomPup\").width() - 2) : xpos;
ypos = (mouse.y - $(\"div.jqZoomPup\").height() / 2 < imageTop) ? 0 : (mouse.y + $(\"div.jqZoomPup\").height() / 2 > imageHeight + imageTop) ? (imageHeight - $(\"div.jqZoomPup\").height() - 2) : ypos;
}
if (settings.lens)
{
$(\"div.jqZoomPup\").css({ top: ypos, left: xpos });
}
scrolly = ypos;
$(\"div.zoomdiv\").get(0).scrollTop = scrolly * scaley;
scrollx = xpos;
$(\"div.zoomdiv\").get(0).scrollLeft = (scrollx) * scalex;
});
}, function () {
$(this).children(\"img\").attr(\"alt\", noalt);
$(document.body).unbind(\"mousemove\");
if (settings.lens)
{
$(\"div.jqZoomPup\").remove();
}
$(\"div.zoomdiv\").remove();
});
count = 0;
if (settings.preload)
{
$(\'body\').append(\"<div style=\'display:none;\' class=\'jqPreload\" + count + \"\'>sdsdssdsd</div>\");
$(this).each(function () {
var imagetopreload = $(this).children(\"img\").attr(\"jqimg\");
var content = jQuery(\'div.jqPreload\' + count + \'\').html();
jQuery(\'div.jqPreload\' + count + \'\').html(content + \'<img src=\\\"\' + imagetopreload + \'\\\">\');
});
}
}
})(jQuery);
function MouseEvent(e) {
this.x = e.pageX;
this.y = e.pageY;
}

/*jQzoom*/
.jqzoom{
border:1px solid #BBB;
float:left;
position:relative;
padding:0px;
cursor:pointer;
}
div.zoomdiv {
z-index: 999;
position : absolute;
top:0px;
left:0px;
width : 200px;
height : 200px;
background: #ffffff;
border:1px solid #CCCCCC;
display:none;
text-align: center;
overflow: hidden;
}
div.jqZoomPup {
z-index : 999;
visibility : hidden;
position : absolute;
top:0px;
left:0px;
width : 50px;
height : 50px;
border: 1px solid #aaa;
background: #ffffff url(../images/zoomlens.gif) 50% top no-repeat;
opacity: 0.5;
-moz-opacity: 0.5;
-khtml-opacity: 0.5;
filter: alpha(Opacity=50);
}

<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">
<html xmlns=\"http://www.w3.org/1999/xhtml\" >
<head>
<title></title>
<script src=\"jquery-1.8.2.min.js\" type=\"text/javascript\"></script>
<script src=\"jquery.jqzoom.js\" type=\"text/javascript\"></script>
<link href=\"jqzoom.css\" rel=\"stylesheet\" type=\"text/css\" />
<script type=\"text/javascript\">
/*使用jqzoom*/
$(function() {
$(\".jqzoom\").jqueryzoom({
xzoom: 400, //放大图的宽度(默认是 200)
yzoom: 400, //放大图的高度(默认是 200)
offset: 10, //离原图的距离(默认是 10)
position: \"right\", //放大图的定位(默认是 \"right\")
preload: 1
});
});
</script>
</head>
<body>
<div class=\"jqzoom\">
<img src=\"images/shoe1_small.jpg\" style=\"width:300px; height:300px;\" alt=\"\" jqimg=\"images/shoe1_big.jpg\" id=\"bigImg\"/>
</div>
</body>
</html>