<!--
	function ltrim(str)
	{
		var re = new RegExp("/^\s+/","ig");
		s = str.replace(re,"");
		return(s);
	}

	function rtrim(str)
	{
		var re = new RegExp("/$\s+/","ig");
		s = str.replace(re,"");
		return(s);
	}

	function trim(str)
	{
		s = ltrim(rtrim(str));
		return(s);
	}
	
	function showsub(menu)
	{
		if (menu.style.display == 'none')
		{
			menu.style.display = 'block';
		}
		else
		{
			menu.style.display = 'none';
		}//if
	}
/*
	function checkadddata()
	{
		if(trim(frmdemo.pname.value)==""))
		{
			alert("用户名不能为空");
			return false;
		}

		if (trim(frmdemo.pwriter.value)=="")
		{
			alert("作者不能为空");
			return false;
		}
		
		if (trim(frmdemo.pdate.value)=="")
		{
			alert("发表年份不能为空");
			return false;
		}
		
		if (trim(frmdemo.paddress.value)=="")
		{
			alert("发表于何处不能");
			return false;
		}

		//return frmdemo.submit();
	}
*/

	function checksubmit()
	{
		username = trim(frmreg.username.value);

		if (username.localeCompare("") == 0)
		{
			window.alert("错误：未提供用户名！");
			return false;
		}//if		

		if (frmreg.pass.value != frmreg.repass.value)
		{
			window.alert("错误：两个密码不一致！");
			return false;
		}//if

		email = trim(frmReg.email.value);

		var pos = email.search("@");
		if ((pos == -1) || (pos == 0) || (pos == email.length))
		{
			window.alert("错误：E-mail地址格式不正确！");
			return false;
		}//if

		frmreg.submit();
		return true;
	}//checksubmit

	function testname()
	{
		str1 = "checkname.phtm?name=";
		str2 = trim(frmreg.username.value);
		
		if (str2 == "")
		{
			window.alert("用户名不能为空！");
			return false;
		}//if

		encodeURIComponent(str2);
		
		s = str1.concat(str2);
		
		window.open(s,"_blank");
		
		frmreg.checkname.value = "check";
		return true;
	}

	function verifysel(opt)
	{
		switch(opt)
		{
			case 4:
				frmWork.optype.value = "showwork";
				break;
		}//

		return frmWork.submit();
	}


-->