window.addEvent('load', function(){
	var container = $('container');
	var column_core = $('column_core');
	
	var size1 = container.getSize();
	var size2 = column_core.getSize();
	
	var diff = size2.y - 100 - size1.y;

	if ((diff > 120) || (diff < 0)) {
		column_core.setStyles({'padding-bottom' : '0px'});
	} else {
		column_core.setStyles({'padding-bottom' : (120 - diff) + 'px'});
	}
		
	var column_left = $('column_left');
	var column_core = $('column_core');
	var column_right = $('column_right');	
	column_left.setStyles({'height' : column_core.offsetHeight});
	column_right.setStyles({'height' : column_core.offsetHeight});
});