// JavaScript Document
window.onload = function() {
	var mainHeight = document.getElementById("main").clientHeight;
	var subHeight = document.getElementById("sub").clientHeight;
	if(mainHeight > subHeight) {
		document.getElementById("sub").style.height = mainHeight-15+'px';
	} else {
		document.getElementById("main").style.height = subHeight-15+'px';
	}
}