var myDomain
myDomain=getMyDomain()

function getMyDomain() {
var myURL=""
var myloc=location;
var locURL=myloc.toString();
var myLocationURL=locURL.toLowerCase();
var pt=myLocationURL.lastIndexOf("/")
if(pt>0) {
   myURL=locURL.substr(0,pt)
   pt=myURL.lastIndexOf("/")
   var ln=myURL.length
   var tmp=myURL.substr(pt+1,ln-pt)
   myURL=tmp;
  }
document.cookie ="siteDomain="+myURL; 
return myURL
}