var Core = {
	start: function() {
	},
	openWindow: function(url,wn,ft,ww,wh,wc) {
		/**
		 * url = URL der Zielseite (string)
		 * wn = window name (string)
		 * ft = features (string mit name=wert,name=wert,...)
		 * ww = window width (int)
		 * wh = window height (int)
		 * wc = Fenster zentriert? (bool)
		 */

		if(window.screen) {
			if(wc) {
				var wl = (screen.width-ww)/2;
				var wt = (screen.height-wh)/2;
				ft+=(ft!='')?',':'';
				ft+=',left='+wl+',top='+wt;
			}
		}
		window.open(url,wn,ft+((ft!='')?',':'')+'width='+ww+',height='+wh);
	}
};