/*Credits:
 * http://www.lunametrics.com/blog/2008/04/17/stuff-more-than-one-value-in-gas-user-defined-segment/
 * Prusak's gwo_write.js
 * */

/*standard read cookie function*/
function useranalytics_read_cookie(cookie_name) {
  var my_cookie=""+document.cookie;
  var ind=my_cookie.indexOf(cookie_name);
  if (ind==-1 || cookie_name=="")
  	{ return ""; } 
  var ind1=my_cookie.indexOf(';',ind);
  if (ind1==-1) 
  	{ ind1=my_cookie.length; } 
  return unescape(my_cookie.substring(ind+cookie_name.length+1,ind1));
}

function useranalytics_superSetVar(appendValue) {
  var getVar = useranalytics_read_cookie('__utmv');       			/*read the __utmv cookie*/
  hasValue = getVar.indexOf(appendValue);   						/*does the cookie already have the value we want to append?*/
  if ( hasValue == -1 ) {                   						/*if the new value is not already in the cookie*/
    removePrefix = /^.*\.(.*)/.exec(getVar); 						/* __utmv cookie has the format 12345678.cookieValue - remove the ## prefix*/
    if (removePrefix && removePrefix[1]) {
      newVar = removePrefix[1] + appendValue; 						/*append the value */
    }else{
      newVar = appendValue;                 						/*this will execute if the cookie was not already set.*/
    }
      var superSetVarTracker = _gat._getTracker("UA-563820-1");  	/*set up a tracker to call _setVar from*/
      superSetVarTracker._initData();  
      superSetVarTracker._setVar(newVar);                   		/*call _setVar with the new value*/
  }
}

function useranalytics_unSetVar(removeValue){
  var getVar = useranalytics_read_cookie('__utmv');         		/*read the __utmv cookie*/
  hasValue = getVar.indexOf(removeValue);    				 		/* does the cookie have the value we want to remove?*/
  if ( hasValue != -1 ) {                     						/* if the value is in the cookie then . . .  otherwise, there is nothing further to do.*/
    removePrefix = /^.*\.(.*)/.exec(getVar);  						/* __utmv cookie has the format 12345678.cookieValue - remove the ## prefix*/
    if (removePrefix && removePrefix[1]) {    						/* if we remove the prefix then.*/
      var re = removeValue + '[^/]*';
      re = new RegExp(re,'g');
      newVar = removePrefix[1].replace(re,""); 						/* newVar = removePrefix[1] MINUS removeValue*/
      var superSetVarTracker = _gat._getTracker("UA-563820-1");  	/* set up a tracker to call _setVar from*/
      superSetVarTracker._initData();  
      superSetVarTracker._setVar(newVar);                   		/* call _setVar with the new value*/
    }
    
  }
}

/* TYPES:
 * user=trialbox
 * product=desktop<version>
 * product=ff<version>
 * product=ie<version>
 */
function useranalytics_setUserType(type, value){
	var str = "/" + type + "=" + value;
	useranalytics_superSetVar(str);
}