var popWin = null;



function openPopWin(winURL, winName, winWidth, winHeight, winCenter, winScrollbars) {

	var dateNow = new Date();

	var timestamp = dateNow.getTime();



	if(winCenter == true) {

		var winLeft = (screen.availWidth / 2) - (winWidth / 2); // Center Window in Screen

		var winTop = (screen.availHeight / 2) - (winHeight / 2); // Center Window in Screen

	} else {

		var winLeft = 0

		var winTop = 0

	}



	var winFeatures = "toolbar=no,location=no,status=no,menubar=no,scrollbars=" + winScrollbars + ",resizable=no";

	winFeatures += getScreenLocation(winWidth, winHeight, winLeft, winTop);



	closePopWin(); // close any previously opened pop-up window



	popWin = window.open(winURL, winName + "_" + timestamp, winFeatures);

}



function closePopWin() { // close pop-up window if it is open

	if(navigator.appName != "Microsoft Internet Explorer" || parseInt(navigator.appVersion) >=4) { //do not close if early IE

		if(popWin != null) {

			if(!popWin.closed) {

				popWin.close();

			}

		}

	}

}



function getScreenLocation(winWidth, winHeight, winLeft, winTop){

	if(winLeft == 0 || winTop == 0) {

		return ",width=" + winWidth + ",height=" + winHeight;

	} else {

		return ",width=" + winWidth + ",height=" + winHeight + ",left=" + winLeft + ",top=" + winTop;

	}

}



function refreshOpener() {

	opener.location.reload();

}