Weblabor

function getElementsByClass(name) {
  var found = 0;
  var elems = new Array();
  var alltags = document.getElementsByTagName("*");
  if (alltags) {
    for (j=0; j < alltags.length; j++) {
        if (alltags[j].className==name) {
          elems[found++]=alltags[j];
        }
    }
  }
  return(elems);
}
function addEventHandler(obj, eventType, handler) {
	if (window.opera && obj.addEventListener) {
		obj.addEventListener(eventType, handler, false);
		return true;
	} else if (obj.addEventListener) {
		obj.addEventListener(eventType, handler, true);
		return true;
	} else if (obj.attachEvent) {
		var r = obj.attachEvent("on"+eventType, handler);
		return r;
	} else {
		return false;
	}
}
function mover() {
	var outimgs = new Array;
	var outimgsname = new Array;
	var overimgs = new Array;
	var over = getElementsByClass('over');
	for (j=0; j < over.length; j++) {
		outimgs[j] = new Image();
		overimgs[j] = new Image();
		outimgs[j].src = over[j].lastChild.src;
		overimgs[j].src = over[j].lastChild.src.replace ('\.jpg','_on.jpg');
		outimgsname[j] = over[j].lastChild.name;
		over[j].setAttribute('onmouseover', 'document.images[\''+outimgsname[j]+'\'].src=\''+overimgs[j].src+'\';');
		over[j].setAttribute('onmouseout', 'document.images[\''+outimgsname[j]+'\'].src=\''+outimgs[j].src+'\';');
	}
}
addEventHandler(window,'load',mover);