// fonction qui defini la fonction javascript em qui permet d'interpreter un mail crypté
function em(h, subject, id) {
	  var result = "";
	  var string = "";
	  var key = "miam";
	  for (var i= (h.substr(0, 2)=="0x")?2:0; i<h.length; i+=2) {string += String.fromCharCode (parseInt (h.substr (i, 2), 16));}
	  for(i=1; i<=string.length; i++)
	  {
		 c = string.substr(i-1,1);
		 keychar = key.substr((i % key.length)-1,1);
		 c = String.fromCharCode(c.charCodeAt(0)-keychar.charCodeAt(0));
		 result=result+c;
	   }
	   if ( subject=="" ) {document.getElementById(id).href="mailto:"+result;}
	   else {document.getElementById(id).href="mailto:"+result+"?subject="+subject;}
	   return result;
}