function SetCookie (name, value) { 
       var exp = new Date(); 
       exp.setTime (exp.getTime()+86400*365); 
       document.cookie = name + "=" + value + "; expires=" + exp.toGMTString()+"; path=/"; 
}

function getCookieVal (offset) { 
	var endstr = document.cookie.indexOf (";", offset); 
	if (endstr == -1) endstr = document.cookie.length; 
    return unescape(document.cookie.substring(offset, endstr)); 
 } 
function DelCookie(name)
{
    SetCookie(name, '');
    return;
}

function GetCookie(name) {
         var arg = name + "="; 
         var alen = arg.length; 
         var clen = document.cookie.length; 
         var i = 0; 
         while (i < clen) { 
             var j = i + alen; 
             if (document.cookie.substring(i, j) == arg) return getCookieVal (j); 
             i = document.cookie.indexOf(" ", i) + 1; 
             if (i == 0) break; 
         } 
	     return null; 
 } 

 function addCookie(url,url_name)//兼容IE和Firefox的收藏
{
		if (document.all)
		{
				window.external.addFavorite(url,url_name);
		}
		else if (window.sidebar)
		{
				window.sidebar.addPanel( url_name,url, "");
		}
}

function setHomepage(url)//兼容IE和Firefox的设为首页
{
		if (document.all)
		{
				document.body.style.behavior='url(#default#homepage)';
				document.body.setHomePage('http://'+url);
		}
		else if (window.sidebar)
		{
				if(window.netscape)
				{
						try
						{
								netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
						}
						catch (e)
						{
							alert( "该操作被浏览器拒绝，如果想启用该功能，请在地址栏内输入 about:config,然后将项 signed.applets.codebase_principal_support 值该为true" );
						}
				}
				var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components. interfaces.nsIPrefBranch);
				prefs.setCharPref('browser.startup.homepage',url);
		}
}

function showInfo(num) 
{for(var id = 0;id<=2;id++) 
{var fpid="focusInfo"+id; 
if(id==num){ 
try{document.getElementById(fpid).style.display="block"}catch(e){}; 
}else{ 
try{document.getElementById(fpid).style.display="none"}catch(e){};}}}

 function Resize(obj,width,height)
{
	var wr = obj.width/width;
	var hr = obj.height/height;
	if (wr>1&&wr>=hr) obj.width = width;
	if (hr>1&&hr>wr) obj.height = height;
}