function numbersonly(myfield, e, dec) {
var key;
var keychar;
if (window.event)
   key = window.event.keyCode;
else if (e)
   key = e.which;
else
   return true;
keychar = String.fromCharCode(key);
// control keys
if ((key==null) || (key==0) || (key==8) ||
    (key==9) || (key==13) || (key==27) )
   return true;
// numbers
else if ((("0123456789").indexOf(keychar) > -1))
   return true;
else
   return false;
}
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) {
		gallery_over = newImage("images/photo_art_gallery_over.gif");
		weddings_over = newImage("images/photo_art_weddings_over.gif");
		info_over = newImage("images/photo_art_ordering_information_over.gif");
		preloadFlag = true;
	}
}
function switchMenu(obj) {
	var el = document.getElementById(obj);
	if ( el.style.display != "none" ) {
		el.style.display = 'none';
	}
	else {
		el.style.display = '';
	}
}
function switchMenuOn(obj) {
	var el = document.getElementById(obj);
	el.style.display = '';
}
function switchMenuOff(obj) {
	var el = document.getElementById(obj);
	el.style.display = 'none';
}
function getTotal() {
	var WH = document.forms["bagform"].whsize.options[document.forms["bagform"].whsize.selectedIndex].value.split(":")
	var QTY = document.getElementById("qty").value
	document.forms["bagform"].cost.value = "$"+(WH[1] * QTY)+".00"
}