// JavaScript Document

function adjustRatio(){
	var win1 = document.getElementById('mainContainer').offsetHeight;
	var win2 = document.getElementById('bgImg2');
	var win3 = document.getElementById('shadowImg2');
	if(document.body.clientHeight > win1){
		win2.style.height = '100%';
		win3.style.height = '100%';
	} else {
		win2.style.height = (win1) + 'px';
		win3.style.height = (win1) + 'px';
	}
}

window.onload = function() {
	adjustRatio();
}
window.onresize = function() {
	adjustRatio();
}