if(top.frames.length >0)
	top.location.href=self.location;

Normal1=new Image();
Normal1.src="img/impressum.jpg";
Highlight1=new Image();
Highlight1.src="img/impressum_o.jpg";	

Normal2=new Image();
Normal2.src="img/sitemap.jpg";
Highlight2=new Image();
Highlight2.src="img/sitemap_o.jpg";

Normal3=new Image();
Normal3.src="img/kontakt.jpg";
Highlight3=new Image();
Highlight3.src="img/kontakt_o.jpg";

Normal4=new Image();
Normal4.src="img/news.jpg";
Highlight4=new Image();
Highlight4.src="img/news_o.jpg";

Normal5=new Image();
Normal5.src="img/home.jpg";
Highlight5=new Image();
Highlight5.src="img/home_o.jpg";

Normal6=new Image();
Normal6.src="img/unternehmen.jpg";
Highlight6=new Image();
Highlight6.src="img/unternehmen_o.jpg";

Normal7=new Image();
Normal7.src="img/leistungen.jpg";
Highlight7=new Image();
Highlight7.src="img/leistungen_o.jpg";

Normal8=new Image();
Normal8.src="img/projekte.jpg";
Highlight8=new Image();
Highlight8.src="img/projekte_o.jpg";

Normal9=new Image();
Normal9.src="img/webdesign.jpg";
Highlight9=new Image();
Highlight9.src="img/webdesign_o.jpg";

Normal10=new Image();
Normal10.src="img/intranet.jpg";
Highlight10=new Image();
Highlight10.src="img/intranet_o.jpg";

Normal11=new Image();
Normal11.src="img/onlineshops.jpg";
Highlight11=new Image();
Highlight11.src="img/onlineshops_o.jpg";

Normal12=new Image();
Normal12.src="img/cms.jpg";
Highlight12=new Image();
Highlight12.src="img/cms_o.jpg";

Normal13=new Image();
Normal13.src="img/multimedia.jpg";
Highlight13=new Image();
Highlight13.src="img/multimedia_o.jpg";

Normal14=new Image();
Normal14.src="img/sms.jpg";
Highlight14=new Image();
Highlight14.src="img/sms_o.jpg";

Normal15=new Image();
Normal15.src="img/emarketing.jpg";
Highlight15=new Image();
Highlight15.src="img/emarketing_o.jpg";

function Bildwechsel(Bildnr,Bildobjekt)
{
window.document.images[Bildnr].src=Bildobjekt.src;

}

function check_eingabe()
{
	
	var name = window.document.eingabeform.name.value;
	var telefon = window.document.eingabeform.tel.value;
	var errortext = '';
	
	//alert(document.forms['eingabeform'].callback_name.value);
	
	if(name.length < 3)
	{
		errortext = 'Bitte geben Sie einen korrekten Namen ein.\n';
	}
	
	if(telefon.length <3)
	{
		errortext = 'Bitte geben Sie eine gültige Telefonnummer ein.\n';
	}
	
	if(errortext=='')
	{
		document.eingabeform.form_action = 'callback';
		document.eingabeform.submit();
	} else {
		alert('Fehler:\n\n' . errortext);
	}
}