document.onkeydown = KeyDownFunc;
var lnkCtrlPrev,lnkCtrlNext;
function KeyDownFunc(evnt) 
{

    if (!evnt) evnt = window.event;
    var key = evnt.keyCode;
    if (evnt.ctrlKey) 
    {
        var lnk;
        if (key == 37&&lnkCtrlPrev) 
        {
            UpdateNavigStat('prev');
          document.location=lnkCtrlPrev;
        }
        if (key == 39&&lnkCtrlNext) 
        {
            UpdateNavigStat('next')
          document.location=lnkCtrlNext;
        }
    }
}

function UpdateNavigStat(dir)
{
 try
    {var img=new Image();
         img.src='/handlers/NavigStat.ashx?rnd='+(new Date()).valueOf()+'&dir='+dir;
         }catch(e){alert(e)}
}