/***** GET-Parameter *****/
function GetUrlParam( paramName ) {
	var oRegex = new RegExp( '[\?&]' + paramName + '=([^&]+)', 'i' ) ;
	var oMatch = oRegex.exec( document.location.search ) ;

	if ( oMatch && oMatch.length > 1 )
		return oMatch[1] ;
	else
		return '' ;
}

/***** Array mischen *****/
function arrayShuffle(){
  var tmp, rand;
  for(var i =0; i < this.length; i++){
    rand = Math.floor(Math.random() * this.length);
    tmp = this[i]; 
    this[i] = this[rand]; 
    this[rand] =tmp;
  }
}
Array.prototype.shuffle = arrayShuffle;

/***** TIMER *****/
var startDate = 0;
function startTimer(){
   startDate = new Date().getTime();
}

function getElapsedTime(){
   if ( startDate != 0 ){
      var currentDate = new Date().getTime();
      var elapsedSeconds = ( (currentDate - startDate) / 1000 );
      var formattedTime = convertTotalSeconds( elapsedSeconds );
   } else {
      formattedTime = "00:00:00";
   }
	return formattedTime;
}

function convertTotalSeconds(ts) {
   var sec = (ts % 60);

   ts -= sec;
   var tmp = (ts % 3600);  //# of seconds in the total # of minutes
   ts -= tmp;              //# of seconds in the total # of hours

   // convert seconds to conform to CMITimespan type (e.g. SS.00)
   sec = Math.round(sec*100)/100;
   
   var strSec = new String(sec);
   var strWholeSec = strSec;
   var strFractionSec = "";

   if (strSec.indexOf(".") != -1) {
      strWholeSec =  strSec.substring(0, strSec.indexOf("."));
      strFractionSec = strSec.substring(strSec.indexOf(".")+1, strSec.length);
   }
   
   if (strWholeSec.length < 2) {
      strWholeSec = "0" + strWholeSec;
   }
   strSec = strWholeSec;
   
   // hier nur volle Sekunden
//   if (strFractionSec.length) {
//      strSec = strSec+ "." + strFractionSec;
//   }


   if ((ts % 3600) != 0 )
      var hour = 0;
   else var hour = (ts / 3600);
   if ( (tmp % 60) != 0 )
      var min = 0;
   else var min = (tmp / 60);

   if ((new String(hour)).length < 2)
      hour = "0"+hour;
   if ((new String(min)).length < 2)
      min = "0"+min;

   var rtnVal = hour+":"+min+":"+strSec;

   return rtnVal;
}
/***** END TIMER *****/