<!--[if IE 6]>
<script type="text/javascript">
(function($) {      jQuery.fn.Fixed = function(options) {  var defaults = {x:0,  y:0  };  var o = jQuery.extend(defaults, options);  var isIe6 = !window.XMLHttpRequest;var html= $('html');  if (isIe6 && html.css('backgroundAttachment') !== 'fixed') { //防止抖动 html.css('backgroundAttachment','fixed').css('backgroundImage','url(about:blank)');};return this.each(function() {  var domThis=$(this)[0];  var objThis=$(this);  if(isIe6){objThis.css('position' , 'absolute');domThis.style.setExpression('left', 'eval((document.documentElement).scrollLeft + ' + o.x + ') + "px"');  domThis.style.setExpression('top', 'eval((document.documentElement).scrollTop + ' + o.y + ') + "px"'); } else {  objThis.css('position' , 'fixed').css('top',o.y).css('left',o.x);  }});  };
})(jQuery)
</script>
<![endif]-->

<!--[if IE 6]>
<script type="text/javascript">
$(function(){
$('.float').Fixed({x:800,y:200});
});
</script>
<![endif]-->

<!--[if IE 6]>
<script type="text/javascript">
$(function(){
//centerX和centerY是可视窗口的高和宽，需要减去自身的的宽度或高度的一半才能居中
var screenHeight=document.documentElement.clientHeight,screenWidth=document.documentElement.clientWidth,floatHeight=$('.float').height(),floatWidth=$('.float').width();$('.float').Fixed({x:(screenWidth-floatWidth)/2,y:(screenHeight-floatHeight)/2
    });
});
</script>
<![endif]-->

<!--[if IE 6]>
<script type="text/javascript">
$(function(){
//centerX和centerY是可视窗口的高和宽，高度自定义，宽度为屏幕宽度-浮层宽度
var screenHeight=document.documentElement.clientHeight,screenWidth=document.documentElement.clientWidth,floatHeight=$('.float').height(),floatWidth=$('.float').width();$('.float').Fixed({x:screenWidth-floatWidth,y:300});
});
</script>
<![endif]-->