var searchOn = new Image(); emailOn = new Image(); addOn = new Image(); updateOn = new Image(); deleteOn = new Image(); submitOn = new Image();
var searchOff= new Image(); emailOff= new Image(); addOff= new Image(); updateOff= new Image(); deleteOff= new Image(); submitOff= new Image();

searchOn.src = "../img/roll/btn_search_on.gif";
searchOff.src = "../img/roll/btn_search_off.gif";

emailOn.src = "../img/roll/btn_emailfriend_on.gif";
emailOff.src = "../img/roll/btn_emailfriend_off.gif";

addOn.src="../img/roll/btn_add_on.gif";
addOff.src="../img/roll/btn_add_off.gif";

updateOn.src="../img/roll/btn_update_on.gif";
updateOff.src="../img/roll/btn_update_off.gif";

deleteOn.src="../img/roll/btn_delete_on.gif";
deleteOff.src="../img/roll/btn_delete_off.gif";

submitOn.src="../img/roll/btn_submit_on.gif";
submitOff.src="../img/roll/btn_submit_off.gif";

function switchIMG(type,img){
	document.images[img].src = type.src;
}