function equal(className) {
	var findClass = document.getElementsByClassName(className);
	var tallest = 0;
	var widest = 0;
	for(i = 0; i < findClass.length; i++){
		var ele = findClass[i];
		var eleHeight = ele.offsetHeight;
		var eleWidth = ele.offsetWidth;
		tallest = (eleHeight>tallest ? eleHeight : tallest);
		widest = (eleWidth>widest ? eleWidth : widest);
	}
	for(i = 0; i < findClass.length; i++){
		findClass[i].style.height = tallest + "px";
		findClass[i].style.width = widest + "px";
	}
}