function changebackground (input) {
		document.getElementById(input).style.background= '#e66665';
	}
	
	function resetbackground (input) {
		document.getElementById(input).style.background= '#CCCCCC';
	}
	
		function resetbackground1 (input) {
		document.getElementById(input).style.background= '#FFFFFF';
	}
	
	
	function domouseover (input) {

		switch(input) {
			case "navimgstrom": newimage = "navi_img/strom_navi.jpg";
			break;
			
			case "navimgerdgas": newimage = "navi_img/erdgas_navi.jpg";
			break;
			
			case "navimgwasser": newimage = "navi_img/wasser_navi.jpg";
			break;
			
			case "navimgueberuns": newimage = "navi_img/uber-uns_navi.jpg";
			break;
			
			case "navimgbusiness": newimage = "navi_img/business_navi.jpg";
			break;
			
			case "navimgschalter": newimage = "navi_img/schalter_navi.jpg";
			break;
			
			case "navimginfocenter": newimage = "navi_img/infocenter_navi.jpg";
			break;
			
			case "navimginteraktiv": newimage = "navi_img/interaktiv_navi.jpg";
			break;
			
			case "navimgoekostrom": newimage = "navi_img/oeko_navi.jpg";
			break;
		}
		
		document.getElementById(input).src = newimage;

	}
	
	function domouseout (input) {

		switch(input) {
			case "navimgstrom": newimage = "navi_img/strom_navi_down.jpg";
			break;
			
			case "navimgerdgas": newimage = "navi_img/erdgas_navi_down.jpg";
			break;
			
			case "navimgwasser": newimage = "navi_img/wasser_navi_down.jpg";
			break;
			
			case "navimgueberuns": newimage = "navi_img/uber-uns_navi_down.jpg";
			break;
			
			case "navimgbusiness": newimage = "navi_img/business_navi_down.jpg";
			break;
			
			case "navimgschalter": newimage = "navi_img/schalter_navi_down.jpg";
			break;
			
			case "navimginfocenter": newimage = "navi_img/infocenter_navi_down.jpg";
			break;
			
			case "navimginteraktiv": newimage = "navi_img/interaktiv_navi_down.jpg";
			break;
			
			case "navimgoekostrom": newimage = "navi_img/oeko_navi_down.jpg";
			break;
		}
		
		document.getElementById(input).src = newimage;

	}
	
	function clearinput(fieldname) {
		document.getElementById(fieldname).value = "";		
	}