function openwindow(url, name, width, height) {
	var left = (screen.width - width) / 2 ;
	var top = (screen.height - height) / 2;
	var windowproperties = "scrollbars=0, resizable=1";
	newwin = window.open(url, name, windowproperties);
	newwin.resizeTo(width, height);
	newwin.moveTo(left, top);
}


function addBookmark(title,url) {
	if (window.sidebar) {
		window.sidebar.addPanel(title, url,"");
	} else if( document.all ) {
		window.external.AddFavorite( url, title);
	} else if( window.opera && window.print ) {
		return true;
	}
}