var ajaxPopulater = function (id,url)
   {
    url  = url + '&StopCache=' + new Date;
    new Ajax.PeriodicalUpdater(id, url,   
    {
     method: 'post',
     frequency: 3,
     asynchronous: true,
     decay: 1
    });
   }
   
     function getElementsByClassName(oElm, strTagName, oClassNames){
	var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	var arrRegExpClassNames = new Array();
	if(typeof oClassNames == "object"){
		for(var i=0; i<oClassNames.length; i++){
			arrRegExpClassNames.push(new RegExp("(^|\\s)" + oClassNames[i].replace(/\-/g, "\\-") + "(\\s|$)"));
		}
	}
	else{
		arrRegExpClassNames.push(new RegExp("(^|\\s)" + oClassNames.replace(/\-/g, "\\-") + "(\\s|$)"));
	}
	var oElement;
	var bMatchesAll;
	for(var j=0; j<arrElements.length; j++){
		oElement = arrElements[j];
		bMatchesAll = true;
		for(var k=0; k<arrRegExpClassNames.length; k++){
			if(!arrRegExpClassNames[k].test(oElement.className)){
				bMatchesAll = false;
				break;
			}
		}
		if(bMatchesAll){
			arrReturnElements.push(oElement);
		}
	}
	return (arrReturnElements)
}

  function Fce_Sirka(zdroj, cil)
  {
    document.getElementById(cil).style.height = document.getElementById(zdroj).value+"px";
  }
  
  function Fce_Velikost(hodnota, element, min, max)
  {
    document.getElementById(element).style.width = hodnota ? min : max;
  }
  
  function Fce_Zobrazit2(produkt, class2)
  {
    var el2 = document.getElementById(produkt);
    el2.className = (el2.className == class2 + " hide") ? class2 + " show" : class2 + " hide";
  }