window.addEvent('domready', function(){
	// find all column layouts									 
	var collayouts = $(document.body).getElements('.columns');
	collayouts.each(function(layout) {
		// check all cols
		var cols = layout.getChildren();
		var mh = 0;
		cols.each(function(col) {
			var s = col.getSize();
			mh = Math.max(mh,s.y);
		}.bind(this));
		cols.each(function(col) {
			col.setStyle('height',mh+'px');
		}.bind(this));
	});
});