if (document.images) {
	newsletterup = new Image(); // Active images

	newsletterup.src = "images/newsletterbutton_up.gif";

	newsletterdown = new Image(); // InActive images

	newsletterdown.src = "images/newsletterbutton_down.gif";
}

function imgOff(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + "up.src");
	}
}

function imgOn(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + "down.src");
	}
}

function NewWindow(url, windowName) {
        w = 800;
	h = 620;
          var winl = (screen.width - w) / 2;
//           var wint = (screen.height - h) / 2;
           winprops = 'status=no,height='+h+',width='+w+',top=30,left='+winl+',scrollbars=yes,resizable';
           win = window.open(url, windowName, winprops);
           if (parseInt(navigator.appVersion) >= 4) { 
              	win.window.focus(); 
           }        
}