function preLoadImages()
{
	var myImgCache = new Array();
	myImgCache[myImgCache.length] = new Image();
	myImgCache[myImgCache.length-1].src = 'http://vulcanent.com/gfx/menu/button-about1.gif';
	myImgCache[myImgCache.length] = new Image();
	myImgCache[myImgCache.length-1].src = 'http://vulcanent.com/gfx/menu/button-ckeyrings1.gif';
	myImgCache[myImgCache.length] = new Image();
	myImgCache[myImgCache.length-1].src = 'http://vulcanent.com/gfx/menu/button-cmedals1.gif';
	myImgCache[myImgCache.length] = new Image();
	myImgCache[myImgCache.length-1].src = 'http://vulcanent.com/gfx/menu/button-contact1.gif';
	myImgCache[myImgCache.length] = new Image();
	myImgCache[myImgCache.length-1].src = 'http://vulcanent.com/gfx/menu/button-cpins1.gif';
	myImgCache[myImgCache.length] = new Image();
	myImgCache[myImgCache.length-1].src = 'http://vulcanent.com/gfx/menu/button-home1.gif';
}
preLoadImages();

function centrePop(URL, name, w, h, scroll) {
	var horizontal = (screen.width - w) / 2;
	var vertical = (screen.height - h) / 2;
	properties = 'width='+w+',height='+h+',left='+horizontal+',top='+vertical+',scrollbars='+scroll+',resizable'
	win = window.open(URL, name, properties)
	if (parseInt(navigator.appVersion) >= 4) { 
		win.window.focus(); 
	}
}