function rek(id)
    {
        var s=document.getElementById(id);
        var t=s.innerHTML;
        var t2 = "";
        if (rka["a"+id] != null)
        {
            var arr=rka["a"+id];
            for (var i=0;i<arr.length;i+=2)
                t2 += t.substring(arr[i],arr[i+1]);
        }
        else t2=t;
        s.innerHTML=t2;
    }      
var rka={};