function fixHeight() {
	var wrapper;
	if (wrapper = $("Wrapper")) {
		var x = 0;
		for (i=0;i<arguments.length;i++) {
			if ($(arguments[i]) && $(arguments[i]).scrollHeight > x) { x = $(arguments[i]).scrollHeight; }
		}
		wrapper.style.height = x + "px";
	}
	return false
}
Event.observe(window,"load",function(){
	fixHeight('Canvas','Left','Middle','Right');
});