String.prototype.Trim = function()
{ 
	return this.replace(/(^\s*)|(\s*$)/g, ""); 
}
function doClick(o,a){
		//alert(o.className);
	if(o.className=="nav_long" || o.className=="nav_onlong")
	{
		o.className="nav_onlong";	
	}
	else
	{
		 o.className="nav_current";
	}
	//alert(o.className);
	 var j;
	 var id;
	 var e;
	
	 for(var i=1;i<=10;i++){
	   id ="nav"+i;
	   j = document.getElementById(id);
	   e = document.getElementById("sub"+i);
	   if(id != o.id){
		if(i==8)
		{
			//alert(a);
			j.className="nav_long";
		}
		else
		{
			j.className="nav_link";
		}
		e.style.display = "none";
	   }else{
			e.style.display = "block";
	   }
	 }
}
function delAjaxCheck()
{
    if(!confirm("确认要删除该件商品吗？")) return false;
}
function delCheck()
{
    return confirm("确认要删除该件商品吗？");
}
function dyniframesize(iframename){
    var getFFVersion=navigator.userAgent.substring(navigator.userAgent.indexOf("Firefox")).split("/")[1];
    //extra height in px to add to iframe in FireFox 1.0+ browsers   
    var FFextraHeight=getFFVersion>=0.1? 16 : 0
    var pTar = null;
    if (document.getElementById){
        pTar = document.getElementById(iframename);
    }
    else{
        eval('pTar = ' + iframename + ';');
    }
    if (pTar && !window.opera){
        //begin resizing iframe 
        pTar.style.display="block";
        if (pTar.contentDocument && pTar.contentDocument.body.offsetHeight){
            //ns6 syntax   
            pTar.height = pTar.contentDocument.body.offsetHeight+FFextraHeight;
        }
        else if (pTar.Document && pTar.Document.body.scrollHeight){
            //ie5+ syntax 
            pTar.height = pTar.Document.body.scrollHeight;
    }
    //alert(pTar.height);
  }
}
function checkName(name)
{
    var obj=document.getElementById(name);
    if(obj.value.Trim()=='')
    {
        alert("请填写用户名！");
        obj.focus();
        return false;
    }
    return true;
}
function checkNameAndPwd(name,pwd)
{
    var obj1=document.getElementById(name);
    if(obj1.value.Trim()=='')
    {
        alert("请填写用户名！");
        obj1.focus();
        return false;
    }
    var obj2=document.getElementById(pwd);
    if(obj2.value.Trim()=='')
    {
        alert("请填写密码！");
        obj2.focus();
        return false;
    }
    return true;
}