var u_preloads = new Array();
var leftheight = 516;
addevent(window,"load",function () {
	im = document.getElementsByTagName("img");
	for (i=0; i<im.length; i++) {
		if (im[i].getAttribute("noalt") != null) im[i].setAttribute("alt","");
		if (im[i].getAttribute("swap") != null) {
			soff = im[i].getAttribute('src'); son = soff.replace("_off","_on");
			u_preloads[i] = new Image(); u_preloads[i].src = son;
			addevent(im[i], 'mouseover', new Function("im["+i+"].src='"+son+"'"));
			addevent(im[i], 'mouseout', new Function("im["+i+"].src='"+soff+"'"));
		}
	}
});

addevent(window,"load",function () {
	objbiv = document.getElementById("biv");
	objref = document.getElementById("footer");
	objspac = document.getElementById("spacer");
	objcontent = document.getElementById("contenttd");

	tref = objref.offsetTop;
	hbiv = objbiv.offsetHeight;
	contentheight = objcontent.offsetHeight;

	bivtop = tref-hbiv-leftheight;
	
	if (bivtop < -140) bivtop = -140;
	
	spacerheight = contentheight-leftheight+hbiv-12;

	objbiv.style.top = bivtop;
	objspac.style.height = spacerheight;
});

addevent(window,"resize",function () {
	objbiv = document.getElementById("biv");
	objref = document.getElementById("footer");
	objspac = document.getElementById("spacer");
	objcontent = document.getElementById("contenttd");

	tref = objref.offsetTop;
	hbiv = objbiv.offsetHeight;
	contentheight = objcontent.offsetHeight;

	bivtop = tref-hbiv-leftheight;
	spacerheight = contentheight-leftheight+hbiv-12;

	objbiv.style.top = bivtop;
	objspac.style.height = spacerheight;
});

function addevent(obj, ev, func) {
	if (obj.addEventListener) {
		obj.addEventListener(ev, func, false);
	}
	else if (obj.attachEvent) { 
		obj.attachEvent('on' + ev, func);
	} else {
		alert('fout');
	}
}