function changeClass(name, new_class) {
	document.all[name].className = new_class;
}

function preloadImages() { 
  var d=document; 
	if (d.images) {
		if (!d.pics) 
			d.pics=new Array();
    var i, j = d.pics.length, a = preloadImages.arguments; 
		for (i = 0; i < a.length; i++)
    	if (a[i].indexOf("#") != 0) { 
				d.pics[j]=new Image;
				d.pics[j++].src=a[i];
			}
	}
}

function swapImgRestore() {
  var i, x, a = document.sr;
	for (i = 0; a && i < a.length && (x = a[i]) && x.oSrc; i ++)
		x.src = x.oSrc;
}

function findObj(n, d) {
  var p, i, x;
	if (!d) 
		d = document;
	if ((p = n.indexOf("?")) > 0 && parent.frames.length) {
    d = parent.frames[n.substring(p + 1)].document;
		n = n.substring(0, p);
	}
  if (!(x = d[n]) && d.all)
		x = d.all[n];
	for (i = 0; !x && i < d.forms.length; i ++)
		x = d.forms[i][n];
  for (i = 0; !x && d.layers && i < d.layers.length; i ++)
		x = MM_findObj(n, d.layers[i].document);
  if (!x && d.getElementById)
		x = d.getElementById(n);
	return x;
}

function swapImage() {
  var i, j = 0, x, a = swapImage.arguments;
	document.sr = new Array;
	for(i = 0; i < (a.length - 2); i += 3)
		if ((x = findObj(a[i])) != null) {
			document.sr[j++] = x;
			if(!x.oSrc) 
				x.oSrc=x.src;
			x.src = a[i + 2];
		}
}

function buttonClick(button) {
	document.all[button].value = '1';
	document.forms['main'].submit();
}