$(document).ready( function() {

	
	/** SIGN GUESTBOOK **/
	$('#guestbookbutton').click( function() {

		var aRequired = new Array('datafield_87_0','datafield_91_0');
		if(checkFormFields(aRequired))
		{
			document.guestbookform.action = 'index.php?si=5&action=sign-guestbook';
			document.guestbookform.submit();
		}
		
		
		
	});
	
	
});



function checkFormFields(aFields)
{
	var bValid = true;
	$(aFields).each( function(i,sField) {
		
		var sValue = $('#'+sField).attr('value');
		if(sValue == '' || sValue == undefined)
		{
			$('#'+sField).addClass('required');
			$('#'+sField).focus( function() { $(this).removeClass('required'); $(this).unbind('focus'); } );
			bValid = false;
		}
		else
		{
			$('#'+sField).removeClass('required');	
		}
	});
	
	return bValid;	
	
}