if (document.images) {

	homeN= new Image();
	homeN.src= 'images/but_home_n.jpg' ;

	entsorgungN= new Image();
	entsorgungN.src= 'images/but_entsorgung_n.jpg' ;

	recyclingN= new Image();
	recyclingN.src= 'images/but_recycling_n.jpg' ;

	beratungN= new Image();
	beratungN.src= 'images/but_beratung_n.jpg' ;

	ueberunsN= new Image();
	ueberunsN.src= 'images/but_ueberuns_n.jpg' ;

	kontaktN= new Image();
	kontaktN.src= 'images/but_kontakt_n.jpg' ;

	
	homeH= new Image();
	homeH.src= 'images/but_home_h.jpg' ;

	entsorgungH= new Image();
	entsorgungH.src= 'images/but_entsorgung_h.jpg' ;

	recyclingH= new Image();
	recyclingH.src= 'images/but_recycling_h.jpg' ;

	beratungH= new Image();
	beratungH.src= 'images/but_beratung_h.jpg' ;

	ueberunsH= new Image();
	ueberunsH.src= 'images/but_ueberuns_h.jpg' ;

	kontaktH= new Image();
	kontaktH.src= 'images/but_kontakt_h.jpg' ;

	
	function imgOn(imgName) {
		document[imgName].src=eval(imgName+ 'H' ).src;
	}
	
	function imgOut(imgName) {
		document[imgName].src=eval(imgName+ 'N' ).src;
	}
}