float.js

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var imagepath="adv/left_bu_quickmenu_02.gif";//广告地址
var imagewidth=135;//图片宽度
var imageheight=60;//图片高度
var speed=2; 
var imageclick="#";//链接地址
var hideafter=0;
var isie=0; 
if(window.navigator.appName=="Microsoft Internet Explorer"&&window.navigator.appVersion.substring(window.navigator.appVersion.indexOf("MSIE")+5,window.navigator.appVersion.indexOf("MSIE")+8)>=5.5) { 
isie=1; 
} 
else { 
isie=0; 
} 
if(isie){ 
var preloadit=new Image() 
preloadit.src=imagepath;
} 
function pop() { 
if(isie) { 
x=x+dx;y=y+dy; 
oPopup.show(x, y, imagewidth, imageheight); 
if(x+imagewidth+5>screen.width) dx=-dx; 
if(y+imageheight+5>screen.height) dy=-dy; 
if(x<0) dx=-dx; 
if(y<0) dy=-dy; 
startani=setTimeout("pop();",50); 
} 
} 
function dismisspopup(){ 
clearTimeout(startani);
oPopup.hide();
} 
function dowhat(){ 
if (imageclick=="dismiss") 
dismisspopup()
else 
window.open(imageclick); 
} 
if(isie) { 
var x=0,y=0,dx=speed,dy=speed; 
var oPopup = window.createPopup(); 
var oPopupBody = oPopup.document.body; 
oPopupBody.style.cursor="hand";
oPopupBody.innerHTML = '<IMG SRC="'+preloadit.src+'">';
oPopup.document.body.onmouseover=new Function("clearTimeout(startani)") 
oPopup.document.body.onmouseout=pop;
oPopup.document.body.onclick=dowhat;
pop(); 
if (hideafter>0) 
setTimeout("dismisspopup()",hideafter*1000);
};