if (document.images) {
   var search = new Image();
   	search = "images/layout/search-a.jpg";
   var unsearch = new Image();
   	unsearch = "images/layout/search.jpg";
}

function ChangeImg(id) {
	if (document.images) {
		switch(id){
		case 'searchid':
			document["searchimg"].src = search;
			break;
		}
	}
}

function ResetImg(id) {
	if (document.images) {
		switch(id){
		case 'searchid':
			document["searchimg"].src = unsearch;
			break;
		}

	}
}