function Jtrim(str)
	{
			if(str==null || str=="")
				return "";
	        var i = 0;
	        var len = str.length;
	        j = len -1;
	        flagbegin = true;
	        flagend = true;
	        while ( flagbegin == true && i< len)
	        {
	           if ( str.charAt(i) == " " )
	                {
	                  i=i+1;
	                  flagbegin=true;
	                }
	                else
	                {
	                        flagbegin=false;
	                }
	        }
	
	        while  (flagend== true && j>=0)
	        {
	            if (str.charAt(j)==" ")
	                {
	                        j=j-1;
	                        flagend=true;
	                }
	                else
	                {
	                        flagend=false;
	                }
	        }
	
	        if ( i > j ) return ("")
	
	        trimstr = str.substring(i,j+1);
	        return trimstr;
	}

function G(obj)
{
	return document.getElementById(obj);
}

function refreshPic()
{
	var timenow=new Date().getTime();
	url="yzcode.asp";
	id=url.indexOf('?');
	if(id>=0)
	{
		if(id==(url.length-1))
			url=url+"t="+timenow;
		else 
			url=url+"&t="+timenow;
	}
	else
	{
		url=url+"?t="+timenow;
	}

	G("checkpic").src=url;
}

function AddFavorite(sURL, sTitle) 
{ 
    try 
    { 
        window.external.addFavorite(sURL, sTitle); 
    } 
    catch (e) 
    { 
        try 
        { 
            window.sidebar.addPanel(sTitle, sURL, ""); 
        } 
        catch (e) 
        { 
            alert("加入收藏失败，请使用Ctrl+D进行添加"); 
        } 
    } 
} 
function h(obj,vrl){ 
        try{ 
                obj.style.behavior='url(#default#homepage)';obj.setHomePage(vrl); 
        } 
        catch(e){ 
                if(window.netscape) { 
                        try { 
                                netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); 
                        } 
                        catch (e) { 
                                alert("此操作被浏览器拒绝！\n请在浏览器地址栏输入“about:config”并回车\n然后将 [signed.applets.codebase_principal_support]的值设置为'true',双击即可。"); 
                        } 
                        var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch); 
                        prefs.setCharPref('browser.startup.homepage',vrl); 
                 } 
        } 
}