function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		comm_over = newImage("images/comm-over.gif");
		comm_act = newImage("images/comm-act.gif");
		comm_actover = newImage("images/comm-actover.gif");
		resi_home_actover = newImage("images/resi-home_actover.gif");
		resi_over = newImage("images/resi-over.gif");
		resi_act = newImage("images/resi-act.gif");
		resi_actover = newImage("images/resi-actover.gif");
		resi_comm_actover = newImage("images/resi-comm_actover.gif");
		abou_cont_act = newImage("images/abou-cont_act.gif");
		abou_over = newImage("images/abou-over.gif");
		abou_act = newImage("images/abou-act.gif");
		abou_actover = newImage("images/abou-actover.gif");
		cont_act = newImage("images/cont-act.gif");
		cont_over = newImage("images/cont-over.gif");
		cont_actover = newImage("images/cont-actover.gif");
		home_cont_act = newImage("images/home-cont_act.gif");
		home_over = newImage("images/home-over.gif");
		home_act = newImage("images/home-act.gif");
		home_actover = newImage("images/home-actover.gif");
		preloadFlag = true;
	}
}


//