// JavaScript Document
function evenAkcni()
{
  var akcni1 = returnObjById('akcni1');
  var akcni2 = returnObjById('akcni2');
  var akcni3 = returnObjById('akcni3');
  var height1 = akcni1.offsetHeight;
  var height2 = akcni2.offsetHeight;
  var height3 = akcni3.offsetHeight;
  var max = Math.max(height1, height2, height3);
  akcni1.style.height=max+"px";
  akcni2.style.height=max+"px";
  akcni3.style.height=max+"px";
}

function evenOst()
{
  
  var levy = returnObjById('left');
  var pravy = returnObjById('right');
  var height1 = levy.offsetHeight;
  var height2 =\ pravy.offsetHeight;    
  var max = Math.max(height1, height2);  
  levy.style.height=max+"px";
  pravy.style.height=max+"px";  
  alert(max);
}

function returnObjById( id )
{
    if (document.getElementById)
        var returnVar = document.getElementById(id);
    else if (document.all)
        var returnVar = document.all[id];
    else if (document.layers)
        var returnVar = document.layers[id];
    return returnVar;
}