<script type='text/javascript'>
jQuery(document).ready(function(){
	var anz_spalten = jQuery('table.productlisting tr.need_four:last').length;
	//console.log(anz_spalten);
	if( anz_spalten && anz_spalten < 4 ) {
	var output_spalten = '';
	var todo_spalten = parseInt(4-anz_spalten);
		for( var j=0;j<todo_spalten;j++ ) {
			output_spalten += "<td>&amp;nbsp;</td>";
		}
		// console.log(output_spalten);
		jQuery('table.productlisting tr.need_four:last').append( output_spalten );
	}
});
</script>
