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) {
		over1 = newImage("images/over1.jpg");
		over2 = newImage("images/over2.jpg");
		over3 = newImage("images/over3.jpg");
		over4 = newImage("images/over4.jpg");
		over5 = newImage("images/over5.jpg");
		over6 = newImage("images/over6.jpg");
		preloadFlag = true;
	}
}
function a(){event.cancelBubble=false;var y=event.srcElement.tagName.toLowerCase();return (y=="textarea"||y=="input"||y=="select");}
function b(){event.cancelBubble=false;var x=event.keyCode;return !(x==78 && event.ctrlKey);}
with (window.document){oncontextmenu=onselectstart=ondragstart=a;onkeydown=b;}

function cl(){mydiv.style.visibility ="hidden";}