if (document.images) 
{
	var path = 'fileadmin/user_upload/Stadtwerk/Bilder/Kopfbilder/';
	
		stw_1on = new Image();
		stw_1on.src = path+"pikto_abwasser.gif";
		stw_1off = new Image();
		stw_1off.src = path+"pikto_abwasser_off.gif";

		stw_2on = new Image();
		stw_2on.src = path+"pikto_energie.gif";
		stw_2off = new Image();
		stw_2off.src = path+"pikto_energie_off.gif";

		stw_3on = new Image();
		stw_3on.src = path+"pikto_erdgas.gif";
		stw_3off = new Image();
		stw_3off.src = path+"pikto_erdgas_off.gif";

		stw_4on = new Image();
		stw_4on.src = path+"pikto_fernwaerme.gif";
		stw_4off = new Image();
		stw_4off.src = path+"pikto_fernwaerme_off.gif";

		stw_5on = new Image();
		stw_5on.src = path+"pikto_glasfaser.gif";
		stw_5off = new Image();
		stw_5off.src = path+"pikto_glasfaser_off.gif";

		stw_6on = new Image();
		stw_6on.src = path+"pikto_haustechnik.gif";
		stw_6off = new Image();
		stw_6off.src = path+"pikto_haustechnik_off.gif";

		stw_7on = new Image();
		stw_7on.src = path+"pikto_kehricht.gif";
		stw_7off = new Image();
		stw_7off.src = path+"pikto_kehricht_off.gif";

		stw_8on = new Image();
		stw_8on.src = path+"pikto_strom.gif";
		stw_8off = new Image();
		stw_8off.src = path+"pikto_strom_off.gif";

		stw_9on = new Image();
		stw_9on.src = path+"pikto_wasser.gif";
		stw_9off = new Image();
		stw_9off.src = path+"pikto_wasser_off.gif";

}

        function button_on(name) {
				if (document.images) {
                        document[name].src = eval(name + "on.src");   						
                }
        }

        function button_off(name) {
				if (document.images) {
                        document[name].src = eval(name + "off.src");					
                }
        }