this.hasIframe = false; this.ImgUrl='/images/201011.png'; // 广告图片 this.linkUrl ='/Test.aspx'; // 广告连接 var closeImgUrl = '/images/closebox.gif'; // 关闭按钮图片 var closeHoveImg ='/images/closebox1.gif';// 关闭按钮鼠标移上去的图片 var adDiv = null; var obj = this; var spanClose = null; var img = null; var timer; var xPos = 20; var yPos = 10; var step = 1; var delay = 30; var width,height,Hoffset,Woffset; var y = 1; var x = 1; var imgType = ""; this.init = function(){
function __floatClass()
{
this.hasIframe = false;
this.ImgUrl='/images/201011.png'; // 广告图片
this.linkUrl ='/Test.aspx'; // 广告连接
var closeImgUrl = '/images/closebox.gif'; // 关闭按钮图片
var closeHoveImg ='/images/closebox1.gif';// 关闭按钮鼠标移上去的图片
var adDiv = null;
var obj = this;
var spanClose = null;
var img = null;
var timer;
var xPos = 20;
var yPos = 10;
var step = 1;
var delay = 30;
var width,height,Hoffset,Woffset;
var y = 1;
var x = 1;
var imgType = "";
this.init = function(){
imgType = this.ImgUrl.substring(this.ImgUrl.lastIndexOf('.'));
adDiv =document.createElement('div');
adDiv.style.cssText='top:10px;left:20px;position:absolute;width:100px;height:100px;z-index:9999;';
var innerHtml = '';
if(this.hasIframe){ innerHtml = '<iframe style=\'width:100%;height:100%;position:absolute;z-index:900;border:none\' frameborder=\'no\' border=\'0\' ></iframe>';}
innerHtml += '<div style=\'width:100%;height:100%;position:absolute;z-index:999;\'><a href=\''+obj.linkUrl+'\' style=\'border:none;\' target=\'_blank\' >';
if(document.all && imgType ==".png")
{
innerHtml +='<div style="width:100%;height:100%;cursor:pointer;filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + obj.ImgUrl + '\', sizingMethod=\'image\')" ></div>';
}else{
innerHtml +='<img src=\''+obj.ImgUrl +'\' style=\'cursor:pointer;display:inline;border:0px\' />';
}
innerHtml +='</a></div>';
adDiv.innerHTML =innerHtml;
spanClose = document.createElement('span');
spanClose.style.cssText='top:5px;right:5px;position:absolute;width:12px;height:12px;z-index:1000;cursor:pointer;';
spanClose.title='关闭';
/** if(document.all)
{
spanClose.style.filter='progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + obj.closeImgUrl + '\', sizingMethod=\'scale\')';
spanClose.onmouseout=function(){this.style.filter='progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + obj.closeImgUrl + '\', sizingMethod=\'scale\')';};
spanClose.onmouseover=function(){this.style.filter='progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + obj.closeHoveImg + '\', sizingMethod=\'scale\')';};
}else{*/
spanClose.style.backgroundImage='url('+obj.closeImgUrl+')';
spanClose.onmouseout=function(){this.style.backgroundImage='url('+obj.closeImgUrl+')';};
spanClose.onmouseover=function(){this.style.backgroundImage='url('+obj.closeHoveImg+')';};
// }
spanClose.onclick = function(){clearInterval(timer);adDiv.parentNode.removeChild(adDiv);adDiv=null; spanClose = null;};
adDiv.appendChild(spanClose);
document.body.appendChild(adDiv);
img = new Image();
img.onload=function(){obj.setAdvertisement();img.onload= null;};
img.src = obj.ImgUrl;
};
this.setAdvertisement = function ()
{
var imgDiv = adDiv.getElementsByTagName('div')[0];
imgDiv.onclick = function(){clearInterval(timer);adDiv.parentNode.removeChild(adDiv); adDiv=null;};
// img_AdvertisementImg.style.height= img.height+'px';
adDiv.style.height= img.height +'px';
//img_AdvertisementImg.style.width= img.width +'px';
adDiv.style.width= img.width+'px';
Hoffset = img.height;
Woffset = img.width;
timer = setInterval(function(){obj.changePos();}, delay);
};
this.changePos=function()
{
width = obj.getClientWidth();
height =obj.getClientHeight();
if (y)
{
yPos += step;
}
else
{
yPos -= step;
}
if (yPos < 0)
{
y = 1; yPos = 0;
}else if (yPos >= (height - Hoffset ))
{
y = 0;yPos = (height - Hoffset);
}
if (x)
{
xPos +=step;
}
else
{
xPos -= step;
}
if (xPos < 0)
{
x = 1; xPos = 0;
}else if (xPos >= (width - Woffset))
{
x = 0; xPos = (width - Woffset);
}
adDiv.style.left = (xPos + obj.getScrollLeft()) +"px";
adDiv.style.top = (yPos + obj.getScrollTop())+"px";
};
/********************
* 取窗口滚动条滚动高度
******************/
this.getScrollTop=function ()
{
return window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop ;
};
/********************
* 取窗口滚动条滚动高度
******************/
this.getScrollLeft=function ()
{
return window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft ;
};
/********************
* 取窗口可视范围的高度
*******************/
this.getClientHeight=function()
{
return (navigator.userAgent.toLowerCase().indexOf('opera') != -1)?document.body.clientHeight:document.documentElement.clientHeight;
};
/********************
* 取窗口可视范围的宽度
*******************/
this.getClientWidth=function()
{
return (navigator.userAgent.toLowerCase().indexOf('opera') != -1)?document.body.clientWidth:document.documentElement.clientWidth;
};
}调用:
<script type="text/javascript">
var ad1=new __floatClass().init();
var ad2 = new __floatClass();
ad2.ImgUrl='/images/201011.png'; // 广告图片
ad2.linkUrl ='/Test.aspx'; // 广告连接
ad2.init();
</script>