function layoutColumns() {
    if (document.getElementById){
      var col1Height = document.getElementById('column1').offsetHeight;
      var col2Height = document.getElementById('column2').offsetHeight;
      var col3Height = document.getElementById('column3').offsetHeight;
      var col4Height = document.getElementById('column4').offsetHeight;

      var colHeights = new Array(col1Height,col2Height,col3Height,col4Height);
      var biggest = 10;

      for (x=0;x<colHeights.length;x++) {
        if (colHeights[x] > biggest) {
          biggest = colHeights[x];
        }
      }

      document.getElementById('column1').style.height=biggest+"px";
      document.getElementById('column2').style.height=biggest+"px";
      document.getElementById('column3').style.height=biggest+"px";
      document.getElementById('column4').style.height=biggest+"px";


    }
  }


function shuffleArray ( myArray ) {
  var i = myArray.length;
  if ( i == 0 ) return false;
  while ( --i ) {
     var j = Math.floor( Math.random() * ( i + 1 ) );
     var tempi = myArray[i];
     var tempj = myArray[j];
     myArray[i] = tempj;
     myArray[j] = tempi;
   }
}