function checkdata(){
	
	if (form2.user.value ==""){
		alert("\请输入用户名");
		form2.user.focus();
		return false;
	}
	
	if (form2.pass.value ==""){
		alert("\请输入密码");
		form2.pass.focus();
		return false;
	}
	
	return true;
}



function login(){
    	
	var username = document.getElementById("user").value;
	var password = document.getElementById("pass").value;
			   
				
	if(username == null||username==""){
		alert("请填写您的用户名！");
		document.getElementById("user").focus();
		return;
	}
			   
				
	if(password==null||password==""){
		alert("请填写您的密码!");
			document.getElementById("pass").focus();
			return;
		}
		document.getElementById("loginform").submit();
			
}