function installExtension (aEvent)
{
  var params = {
    "SEOHAND": { URL: aEvent.target.href,
             IconURL: aEvent.target.getAttribute("iconURL"),
             Hash: aEvent.target.getAttribute("hash"),
             toString: function () { return this.URL; }
    }
  };
  InstallTrigger.install(params);
  return false;
}

function createXMLHttpRequest() {
	try { return new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) {}
	try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch (e){}
	try { return new XMLHttpRequest(); } catch(e) {}
	alert("XMLHttpRequest not supported");
	return null;
}


var xhReq;