function preload() { 
var a = preload.arguments;
document.imageArray = new Array(a.length);
	for (var n=0 ; n<a.length ; n++)
  	{
    document.imageArray[n] = new Image;
    document.imageArray[n].src = a[n];
}
}

preload('images/nav-01-h.gif','images/nav-02-h.gif','images/nav-03-h.gif','images/nav-04-h.gif','images/nav-05-h.gif','images/nav-06-h.gif','images/nav-07-h.gif');

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

function swap(img, src) {
	findObj(img).src = src;
}