function getPhoneNumber()
   {
      var vars = [], hash, phonenumber;
      var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
      phonenumber = "1-866-637-2270";
    
      // get all get variables from the url
      for(var i = 0; i < hashes.length; i++)
         {
            hash = hashes[i].split('=');
            vars.push(hash[0]);
            vars[hash[0]] = hash[1];
         }
      
	  // if get variable is in the URL
      if (vars["_vsrefdom"]=="adwords")
	     {
            // set the voice start phone number
			phonenumber = "1-866-908-7642";
			
			// prepare for setting a cookie
			var expires,name,expires_date;
			var today = new Date();
			today.setTime( today.getTime() );
			expires = 365 * 1000 * 60 * 60 * 24;
			expires_date  = new Date( today.getTime() + (expires) );
	        
			// set cookie
			document.cookie = "phonenumber="+phonenumber+";expires=" + expires_date.toGMTString() + "";
		 }
	  else
	     {
	        var name;
			name = "phonenumber=";
	        var returnvalue = "";
	        if (document.cookie.length > 0) 
			   {
	              offset = document.cookie.indexOf(name)
	              // if cookie exists
	              if (offset != -1) 
			         {
			            offset += name.length
			            // set index of beginning of value
			            end = document.cookie.indexOf(";", offset);
			            // set index of end of cookie value
			            if (end == -1) end = document.cookie.length;
			            returnvalue=unescape(document.cookie.substring(offset, end))
					 }
			   }
		    
			if(returnvalue != "")// if returnvalue is not empty
			   {
			      // set phone number to be the one read from the cookie
				  phonenumber = returnvalue;
			   }
		 }
		 
	  document.write (phonenumber);
   }