///双击滚屏函数
     var currentpos,timer;
    
     function initialize()
     {
     timer=setInterval("scrollwindow()",10);
     }
     function sc(){
     clearInterval(timer);
     }
     function scrollwindow()
     {
     currentpos=document.body.scrollTop;
     window.scroll(0,++currentpos);
     if (currentpos != document.body.scrollTop)
     sc();
     }
     document.onmousedown=sc
     document.ondblclick=initialize
///双击滚屏函数结束

///点击不产生虚线函数
	function openin(url)
	{
       		top.window.open(url,"_parent","");
	}
	function openout(url)
	{
		top.window.open(url,"_blank","");
	}
///点击不产生虚线函数结束

///判断用户登陆开始
	function LoginForm(theForm)
	{
		if (theForm.username.value == "")
		{
  			alert("请输入用户名!");
   			theForm.username.focus();
			return (false)
		}
		if (theForm.password.value == "")
		{
			alert("请输入密码!");
			theForm.password.focus();
			return (false)
		}
	}
///判断用户登陆结束

///判断搜索开始
	function SearchForm(theForm)
	{
		if (theForm.keyword.value == "")
		{
  			alert("请输入关键字!");
   			theForm.keyword.focus();
			return (false)
		}
		if (theForm.keyword.value == "请输入关键字")
		{
			alert("请输入关键字!");
			theForm.keyword.focus();
			return (false)
		}
	}
///判断搜索结束