var regUsername=/^[a-zA-Z0-9,_.]*$/;//Alphanumerics and  .,_
function LoginCheck()
{

  var susername="";
  var spassword="";
  susername=document.getElementById("txtUsername").value;
  spassword=document.getElementById("txtPassword").value;
  document.getElementById("txtUsername").className="textbox2";
  document.getElementById("txtPassword").className="textbox2";
  
  if(susername=="")
	{
	
		alert("Please enter Username");
		document.getElementById("txtUsername").focus();
		document.getElementById("txtUsername").className="textbox2_req";
		
		return false;
	}
  if(spassword=="")
	{
		alert("Please enter Password");
		document.getElementById("txtPassword").focus();
		document.getElementById("txtPassword").className="textbox2_req";
		return false;
	}
	
	if(!regUsername.test(document.getElementById('txtUsername').value))
	{
		alert("Please enter valid Username");
		document.getElementById("txtUsername").value="";
		document.getElementById("txtUsername").focus();
		document.getElementById("txtUsername").className="textbox2_req";
		return false;
	}
	
	
	

checkvalue();		
  
	

  
}


function checkvalue()
{

document.hform.hdnuser.value =document.getElementById("txtUsername").value;  
document.hform.hdnpass.value = MD5(document.getElementById("hidrandom").value+document.getElementById("txtPassword").value);  
document.getElementById("txtUsername").value = "";  
document.getElementById("txtPassword").value = "";  
document.hform.submit();  

}