$(function() {
    
    /* jqtransform */
    $(".jqtransform").jqTransform();
    
    /* input focus */
    $('input[type="text"]').focus(function() {  
        if (this.value == this.defaultValue){ this.value = ''; }  
    });
  
    /* other */
    $('table tr:even').addClass('even');
  
  
    
});

function fdalsi()
{
    var aktivni,limit;
    
    aktivni = $('#aktivni').attr('value');
    limit = $('#limit').attr('value');
        
    $('.otazka').hide();
    dalsi = aktivni - (-1);
    if (dalsi > limit)
    {
        dalsi = limit;
        
        $.ajax({
        type: "POST",
        url: "?f=odeslat",
        data: $("#form_posid_" + aktivni).serialize(),
        success: function(response)
        {
            if (response)
            {
                //$("body").empty();
                $("html").html(response);
            }
          }
        });
        
        
        return;
        //send ajax here whole test was passed
    }
    $.ajax({
        type: "POST",
        url: "?f=next",
        data: $("#form_posid_" + aktivni).serialize(),
        success: function(response)
        {
            if (response)
            {
                //$("body").empty();
                $("html").html(response);
            }
      }
    });
    
 
    
     /****** countdown change ***********************************************/
    var m = $('#minutes_ot_' + dalsi).attr('value');
    var s = $('#seconds_ot_' + dalsi).attr('value');
    
    //alert(m); alert(s);
    secs = (m * 60) + s*1;
    //alert(secs);
    /***********************************************************************/
    
    
    
    
    $('#aktivni').attr('value', dalsi);
    
    $('#otazka' + dalsi).show(''); 
}
function fpredchozi()
{
    var predchozi,limit;
    
    aktivni = $('#aktivni').attr('value');
    limit = $('#limit').attr('value');
    
    $('.otazka').hide();
    predchozi = aktivni - 1;
    if (predchozi < 1)
    {
        predchozi = limit;
    }
    $('#aktivni').attr('value', predchozi);
    
    $('#otazka' + predchozi).show(''); 
    
    
   
    
    
}



function countdown() {
	setTimeout('Decrement()',1000);
}
function Decrement() {
	if (document.getElementById) {
		var minutes = document.getElementById("minutes");
		var seconds = document.getElementById("seconds");
		// if less than a minute remaining
		if (secs < 1)
		{
            minutes.innerHTML = 0;
            seconds.innerHTML = 0;
            
            //send ajax here once, setTimeout is not called again
        }
        else
        {
            if (secs < 59) 
            {
    			minutes.innerHTML = '0' + 0;
    			if (secs < 10) { seconds.innerHTML = '0' + secs;} else { seconds.innerHTML = secs; }
    		} 
            else 
            {
    			minutes.innerHTML = getminutes();
    			if (getseconds() < 10) { seconds.innerHTML = '0' + getseconds();} else { seconds.innerHTML = getseconds(); }

    			//seconds.innerHTML = getseconds();
    		}
    		secs--;
    		setTimeout('Decrement()',1000);
	    }
    }
}
function getminutes() {
	// minutes is seconds divided by 60, rounded down
	mins = Math.floor(secs / 60);
	return mins;
}
function getseconds() {
	// take mins remaining (as seconds) away from total seconds remaining
	return secs-Math.round(mins *60);
}