var arrow_on = new Image();
arrow_on.src = "images/04_00_arroworange_c.gif";

var arrow_off = new Image();
arrow_off.src = "images/04_00_arrowgray_c.gif";


function rollOverArrow(which){
	var tmp = "arrow" + which;
	if(document.images){
		document.images[tmp].src = arrow_on.src;
	}
}

function rollOutArrow(which){
	var tmp = "arrow" + which;
	if(document.images){
		document.images[tmp].src = arrow_off.src;
	}
}