function chgIndexDiv(num,total,linkName,divName){
	if(document.getElementById(linkName+num).className==linkName+num+'on'){
		return;
	}else{
		for(i=1;i<total+1;i++){
			if(document.getElementById(linkName+i).className==linkName+i+'on'){
				document.getElementById(linkName+i).className=linkName+i+'off';
				document.getElementById(divName+i).style.display='none';
				document.getElementById(linkName+num).className=linkName+num+'on';
				document.getElementById(divName+num).style.display='';
				break;
			}
		}
	}
}
function chgIndexDiv_2(num,total,linkName,divName){
	if(document.getElementById(linkName+num).className==linkName+num+'on'){
		return;
	}else{
		for(i=1;i<total+1;i++){
			if(document.getElementById(linkName+i).className == linkName+i+'on'){
				document.getElementById(linkName+i).className=linkName+i+'off';
				document.getElementById(divName+i).style.display='none';
				document.getElementById(linkName+num).className=linkName+num+'on';
				document.getElementById(divName+num).style.display='';
				break;
			}
		}
	}
}


function CheckFormUserLogin()
{
	if(document.UserLogin.userid.value=="")
	{
		alert("请输入用户名！");
		document.UserLogin.userid.focus();
		return false;
	}
 	if(document.UserLogin.password.value == "")
	{
		alert("请输入密码！");
		document.UserLogin.password.focus();
		return false;
	} 
}