function Code(myMail, myText) {
  
   if ( myText === undefined ) {
      myText = "";
   }
   
    myExpo = new Array(3,4,3,2,1,2,4,1,3,1,3,4,2,2,4,2,4,1,3,1); 
  
	var myCode = "";
	var myAnz  = myMail.length - 1;
	var myPos  = (myAnz % 20) + 1;
	
	for (var j = 0; j <= myAnz; j++) {
	  myCode = myCode + String.fromCharCode(myMail.charCodeAt(j) ^ myExpo[myPos]);
	  myPos++;
	  if (myPos>20) myPos = 1;
	}

	location.href = "mailto:" + myCode + myText
	
  }