function openWindow(url,winname,x,y){
	window.open(url,winname,"menubar=1,scrollbars=1,toolbar=1,resizable=1,status=1,width=" + x + ",height=" + y + "'");
}

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) {
		pagejump_blue_01_over = newImage("images/mechanism/pagejump_blue_01_over.gif");
		pagejump_blue_02_over = newImage("images/mechanism/pagejump_blue_02_over.gif");
		pagejump_red_01_over = newImage("images/mechanism/pagejump_red_01_over.gif");
		pagejump_red_02_over = newImage("images/mechanism/pagejump_red_02_over.gif");
		pagejump_red_03_over = newImage("images/mechanism/pagejump_red_03_over.gif");
		pagejump_red_04_over = newImage("images/mechanism/pagejump_red_04_over.gif");
		pagejump_green_01_over = newImage("images/mechanism/pagejump_green_01_over.gif");
		pagejump_green_02_over = newImage("images/mechanism/pagejump_green_02_over.gif");
		pagejump_green_03_over = newImage("images/mechanism/pagejump_green_03_over.gif");
		pagejump_gray_01_over = newImage("images/mechanism/pagejump_gray_01_over.gif");
		pagejump_gray_02_over = newImage("images/mechanism/pagejump_gray_02_over.gif");
		pagejump_gray_03_over = newImage("images/mechanism/pagejump_gray_03_over.gif");
		pagejump_gray_04_over = newImage("images/mechanism/pagejump_gray_04_over.gif");
		preloadFlag = true;
	}
}

function popup(filename,winname) {
newWin=window.open(filename,winname,"width=320,height=430");
}