/*javascript*/
function trim(stringToTrim) 
{
  return stringToTrim.replace(/^\s+|\s+$/g,"");
}
function checkvalid_login()
	{
		if(trim(document.getElementById("txtUsername").value)=="")
		{
			alert("Please Enter Username");
			document.getElementById("txtUsername").focus();
			return false;
		}
		if(trim(document.getElementById("txtPassword").value)=="")
		{
			alert("Please Enter Password");
			document.getElementById("txtPassword").focus();
			return false;
		}
		
	}