// JavaScript Document
function centeropen(url, winwidth, winheight){
 var centerwin=window.open(url, "", "toolbar=0, resize=1, scrollbars=1, status=1")
 centerwin.resizeTo(winwidth, winheight)
 centerwin.moveTo(screen.width/2-winwidth/2, screen.height/2-winheight/2) //center window on user's screen
}

var newwindow=""

function closenewwindow() {
	if (newwindow) {
		newwindow.close();
		}
	}