function setEqualHeight(columns){
	var tallestcolumn = 0;
	columns.each(function(){
		currentHeight = $(this).height();
		if(currentHeight > tallestcolumn){
			tallestcolumn = currentHeight;
		}
	});
	columns.height(tallestcolumn);
}
$(document).ready(function(){
	setEqualHeight($("div.in_katalog_2"));
})