function validatelogin(user,pass){	
	var ajax=new AJAX();
	document.getElementById("lblValidate").innerHTML='Validating...';
	ajax.setEventHandler('loginresult');
	ajax.getAJAX('validatelogin.aspx?user='+user+'&pass='+pass);
}

function loginresult(res,success){
	var arr;
	var err=document.getElementById("lblValidate");
	if(success){
		err.innerHTML='';
		arr=res.response.split('||');
		if(arr[0]=='S'){
			location.href=arr[1];
		}else{
			if(arr[0]=='F'){
				err.innerHTML=arr[1];
				document.forms[0].elements['txtUser'].focus();
			}
		}
	}else{
		err.innerHTML=res.response;
	}
}
function dokeypress(evt){
  if(evt.which) return; //firefox..
  var key = evt.keyCode;  //ie
  if (key == 13){	
    document.getElementById("imgsubmit").click();
  }  
}