function chkform()
{	
	var message 	    = document.gbform.message.value;
	var name	 	    = document.gbform.name.value;
	var pattern_message = new RegExp( '^([^<]{3,})' );
	var pattern_name    = new RegExp( '^([^<]{3,})' );

	if ( !pattern_message.test( message ) )
	{		
		alert("Sie haben die Nachricht vergessen");
		document.gbform.message.focus();
		return false;
	}
	if ( !pattern_name.test( name ) )
	{		
		alert("Sie haben den Namen vergessen");
		document.gbform.name.focus();
		return false;
	}
	
    // change variable to avoid gb misuse
	document.gbform.hid_var.value = 't' + 's' + 't';

	return true;
}

// For Concertentries to check up form
function chkconcform()
{	
	var datum	 	    = document.concform.inp_date.value;
	var zeit	 	    = document.concform.inp_time.value;
	var pattern_datum	= new RegExp( '^([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})' );
	var pattern_zeit	= new RegExp( '^([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})' );

	if ( !pattern_datum.test( datum ) )
	{		
		alert("Falsches Datumsformat (0000-00-00)");
		document.concform.inp_date.focus();
		return false;
	}
	if ( !pattern_zeit.test( zeit ) )
	{		
		alert("Falsches Zeitformat (00:00:00)");
		document.concform.inp_time.focus();
		return false;
	}
	
	return true;
}

// For Newsentries to check up form
function chknewsform()
{	
	var datum	 	    = document.newsform.inp_date.value;
	var pattern_datum	= new RegExp( '^([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})' );

	if ( !pattern_datum.test( datum ) )
	{		
		alert("Falsches Datumsformat (0000-00-00)");
		document.newsform.inp_date.focus();
		return false;
	}

	return true;
}