function doEqual(){
	var main = document.getElementById('container');
	if(!main) return false;


	var max = 0;
	for (var i=0;i<main.childNodes.length;i++) {
		elem = main.childNodes[i];
		if (elem.tagName == 'DIV')
		{
			max = Math.max(elem.offsetHeight, max)
		}
		
	}

	doResult(max)
}

function doResult(max) {
	var main = document.getElementById('container');
	for (var i=0;i<main.childNodes.length;i++) {
		elem = main.childNodes[i];
		if (elem.tagName == 'DIV')
		{
			elem.style.height = max + 'px';
		}
		
	}

}

function srAddEvent(obj, type, fn) { 
	if (obj.addEventListener)
		obj.addEventListener(type, fn, false);
	else if (obj.attachEvent)
		obj.attachEvent( "on"+type, fn );
}


srAddEvent(window, 'load', doEqual);