// JavaScript Document

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function HideWhite () {
	document.getElementById('white').style.visibility = "visible";
}
function ShowWhite () {
	document.getElementById('white').style.visibility = "hidden";
}

function pruefenkontakt()
{
 res = true;
 a = document.formkontakt;
 if(a.name.value == ''){res = false;}
 if(a.telefon.value == ''){res = false;}
 reg1 = new RegExp('([0-9])+');
 if(reg1.test(a.telefon.value) == false){res = false;}
 if(a.email.value == ''){res = false;}
 reg2 = new RegExp('^([a-zA-Z0-9\\-\\.\\_]+)'+
                  '(\\@)'+
                  '([a-zA-Z0-9\\-\\.]+)'+
				  '([a-zA-Z0-9\\-\\.]+)'+
                  '(\\.)'+       
                  '([a-zA-Z]{2,4})$');
 if(reg2.test(a.email.value) == false){res = false;}
 if(a.anfrage.value == ''){res = false;}
 if(res == false){alert('Bitte fuellen Sie alle Felder korrekt aus!')}
return res;
}

function changeBtn(mode) { 
    switch(mode) { 
       case 0: 
          document.getElementById('btn_senden').src="graphics/btn_senden_over.gif"
          break; 
       case 1: 
          document.getElementById('btn_senden').src="graphics/btn_senden.gif" 
          break; 
    } 
}