function check_height()
{
	var left = $(".columns .left");
	var right = $(".columns .right");
	var center = $(".columns .center");
	
	if (left.height() > right.height()){
		right.height(left.height());
	}
	else{
		left.height(right.height());
	}
	
	if(center.height() > right.height())
	{
		right.height(center.height());
		left.height(center.height());
	}
}
$(document).ready(function(){
	setTimeout('check_height()',500);
});