function changeImg(obj,act) {
	if (act!="") { act="_"+act; }
	document.images[obj].src="images/navi_service_"+obj+act+".gif";
}

function zoomImg(src,width,height) {
	
	var x = parseInt( (screen.availWidth / 2) - (this.width / 2) );
    var y = parseInt( (screen.availHeight / 2) - (this.height / 2) );
	var newWin = window.open("","","left="+x+",top="+y+",width="+(width+10)+",height="+(height+10)+"\"");
	newWin.document.write('<a href="javascript:self.close()"><img src="'+src+'" border="0" /></a>');
}

var savedId=0;

function showp(id) {
	if (savedId) { document.getElementById(savedId).style.visibility='hidden'; }
	id="person"+id;
	document.getElementById(id).style.visibility='visible';
	savedId=id;
}

var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";

function encode64(input) {
   var output = "";
   var chr1, chr2, chr3;
   var enc1, enc2, enc3, enc4;
   var i = 0;

   do {
      chr1 = input.charCodeAt(i++);
      chr2 = input.charCodeAt(i++);
      chr3 = input.charCodeAt(i++);

      enc1 = chr1 >> 2;
      enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
      enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
      enc4 = chr3 & 63;

      if (isNaN(chr2)) {
         enc3 = enc4 = 64;
      } else if (isNaN(chr3)) {
         enc4 = 64;
      }

      output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) + 
         keyStr.charAt(enc3) + keyStr.charAt(enc4);
   } while (i < input.length);
   
   return output;
}

function decode64(input) {
   var output = "";
   var chr1, chr2, chr3;
   var enc1, enc2, enc3, enc4;
   var i = 0;

   // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
   input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

   do {
      enc1 = keyStr.indexOf(input.charAt(i++));
      enc2 = keyStr.indexOf(input.charAt(i++));
      enc3 = keyStr.indexOf(input.charAt(i++));
      enc4 = keyStr.indexOf(input.charAt(i++));

      chr1 = (enc1 << 2) | (enc2 >> 4);
      chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
      chr3 = ((enc3 & 3) << 6) | enc4;

      output = output + String.fromCharCode(chr1);

      if (enc3 != 64) {
         output = output + String.fromCharCode(chr2);
      }
      if (enc4 != 64) {
         output = output + String.fromCharCode(chr3);
      }
   } while (i < input.length);

   return output;
}

function submitForm() {
	var fieldsToHave = new Array("Name","Vorname","Telefon","Email");
	var errorText="";
	var firstSet=0;
	for (var i=0; i<fieldsToHave.length; i++){
		if (!check_empty(document.form[fieldsToHave[i]].value) ){
			if (firstSet==1) { errorText+=", "; }
			errorText+=document.form[fieldsToHave[i]].name;
			firstSet=1;
		}
	}
	
	if (errorText.length>0) {
		alert("Bitte folgende Felder ausfüllen:\n"+errorText);
	} else {
		document.form.submit();
	}
}

function check_empty(text) {
	return (text.length > 0);
}

function strsearch(obj,idcatart,x) {
	extra='';
	if (obj[x]) { extra='&'+x+'='+obj[x].value; }
	//if (obj.wert.value.length>3) {
		value=encode64(obj.wert.value);
		location.href='index.php?idcatart='+idcatart+'&str='+value+extra;
	//}
}