function validateLogin()

{

	var username=document.loginForm.username.value;
	var password=document.loginForm.password.value;
	

//	User name validation

	if(username==null || username=="")

	{

		alert("You must enter a user name");

		document.loginForm.username.focus();

		return false;

	}

	

	if(username!=null || username!="")

	{

		for(i=0; i<username.length; i++)

		{

			if((username.substring(i,i+1)>="a" && username.substring(i,i+1)<="z") || (username.substring(i,i+1)>="0" && username.substring(i,i+1)<="9") ||(username.substring(i,i+1)>="A" && username.substring(i,i+1)<="Z") || username.substring(i,i+1)=="_" || username.substring(i,i+1)=="@")

			{
				// do nothing
			}

			else

			{

				alert("Invalid username");

				document.loginForm.username.focus();

				return	false;

			}

		}

	}

//Password Validation

	if(password==null || password=="")

	{

		alert("Please enter the password");
		document.loginForm.password.focus();

		return false;

	}



	return true;

}

function loadForm()

{

	document.loginForm.username.focus();

}