var obj1, obj2;

function scrolling() {
	obj2.scrollTop = obj1.scrollTop;
};

function doLoad() {
	obj1 = document.getElementById("content");
	obj2 = document.getElementById("images");
	if (obj1.attachEvent)
		obj1.attachEvent("onscroll", scrolling)
	else
	if (obj1.addEventListener)
		obj1.addEventListener("scroll", scrolling, true);
}

window.onload = doLoad;