//<![CDATA[

$(document).ready(function(){
 var skyscraperAd = $("#jezdici");
 var skyscraperOffset = skyscraperAd.offset().top;
 var skyscraperBottom = $("#paticka").offset().top - skyscraperAd.height();
 $(window).scroll(function() {
   skyscraperAd.stop();
   var windowTop = $(window).scrollTop();
   if (windowTop > skyscraperOffset) {
      if (windowTop > skyscraperBottom) windowTop = skyscraperBottom;
      if (windowTop < 0) windowTop = 0;
      skyscraperAd.animate({top: windowTop + 'px'}, 'fast');
   } else
      skyscraperAd.animate({top: skyscraperOffset + 'px'},'fast');
 });
});

function limitText(limitField, limitCount, limitNum)  /* ořezání políčka formuláře na zadanou hodnotu */
{
	if (limitField.value.length > limitNum) {
		limitField.value = limitField.value.substring(0, limitNum);
	} else {
		limitCount.value = limitNum - limitField.value.length;
	}
}


/* plynuly posun stranky nahoru a dolu */
$(function () {
             $('#SupDolu').click(function () {
                 $('html, body').animate({
                     scrollTop: $(document).height()
                 },
                 600);
                 return false;
             });

             $('#SupNahoru').click(function () {
                 $('html, body').animate({
                     scrollTop: '0px'
                 },
                 300);
                 return false;
             });
             
             $('#SupNahoru2').click(function () {
                 $('html, body').animate({
                     scrollTop: '0px'
                 },
                 600);
                 return false;
             });
         });

//]]>