function openWindow(thisURL,thisName,thisArgs) {
	internalURL = thisURL;
	internalName = thisName;
	internalArgs = thisArgs;
	if (internalURL == '') {
		exit;
	}
	if (internalName == '') {
		internalName = new Date().getTime();
	}
	if (internalArgs == '') {
		internalArgs = 'scrollbars,resizable,status=No,toolbar,width=700,height=392,left=50,top=50';
	}
	popupWin = window.open(internalURL,internalName,internalArgs);
 	popupWin.focus();
}

function openCenteredWindow(thisURL, pWidth, pHeight){
	var sWidth = screen.availWidth;
	var sHeight = screen.availHeight;
	var sTop = (sHeight - pHeight) / 2;
	var sLeft = (sWidth - pWidth) / 2;
	var sParms = 'top=' + sTop + ',left=' + sLeft + ',width=' + pWidth + ',height=' + pHeight;
	openWindow(thisURL, '', sParms);
}

function VVTours(pURL){
	// windows 502, 564
	openCenteredWindow(pURL,700, 392);
}