/**
	params example: 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'
*/

var newwindowsaved = '';
function popupWindow(url, name, params)
{
	if (!newwindowsaved.closed && newwindowsaved.location)
	{
		newwindowsaved.location.href = url;
	}
	else
	{
		newwindowsaved = popupNewWindow(url,name,params);
	}
}
function popupNewWindow(url, name, params) {
	newwindow=window.open(url,name, params);
	if (!newwindow.opener) newwindow.opener = self;
	if (window.focus) {newwindow.focus()}
	return newwindow;
}