function ROImage(ipath, iname, over) {
	strRoot = 'images/'
	if (over) {
		window.document.images[iname].src = strRoot + ipath + 'o' + iname;
	}
	else {
		window.document.images[iname].src = strRoot + ipath + iname;
	}
}

function ROPreload() {
	strRoot = 'images/'
	preloads = new Array();
	var i;
	for(i=0; i<arguments.length; i++) {
		preloads[i]=new Image();
		preloads[i].src=strRoot+arguments[i];
	}
}