function trim(str)
{
   return str.replace(/^\s*|\s*$/g,"");
}
function validate_form( )
{
    valid = true;

    if ( trim(document.login.UsrName.value) == "" )
    {
        alert ( "Please enter the User name." );
        document.login.UsrName.focus();
        valid = false;
	    return valid;
    }
    if ( trim(document.login.Pasword.value) == "" )
    {
        alert ( "Please enter the Password." );
        document.login.Pasword.focus();
        valid = false;
	    return valid;
    }
    return valid;
}