var UpdateInterval = 20;
var PixelPerInterval = 6;
var scrollInterval;

function startScrollUp() {
    scrollInterval = setInterval(function(){scrollUp()}, UpdateInterval);
}

function startScrollDown() {
    scrollInterval = setInterval(function(){scrollDown()}, UpdateInterval);
}
function scrollDown() {
    document.getElementById('PANORAMAX').scrollTop += PixelPerInterval;
}

function scrollUp() {
    document.getElementById('PANORAMAX').scrollTop -= PixelPerInterval;
}

function stop_scrolling() {
    clearInterval(scrollInterval);
}


/* news blank */
function doBlink() {
  var blink = document.all.tags("BLINK")
  for (var i=0; i < blink.length; i++)
    blink[i].style.visibility = blink[i].style.visibility == "" ? "hidden" : "" 
}

function startBlink() {
  if (document.all)
    setInterval("doBlink()",1000)
}
window.onload = startBlink;

/* forms */
function changeAction(sayfa){
	var x=document.forms.uye;
	x.action=sayfa;
}

function addSearchCategory(parentCategoryObj, destinationDivId, categoryLevel){
	if(parentCategoryObj.options.length>0){
		var categoryName = parentCategoryObj.options[parentCategoryObj.selectedIndex].value;
		var destinationDivObj = document.getElementById(destinationDivId);
		url = 'ajax_search_cats.php?level='+categoryLevel+'&cat='+categoryName;
		if(categoryLevel<4){document.getElementById("category4").innerHTML='';}
		if(categoryLevel<3){document.getElementById("category3").innerHTML='';}
				
		var opt = {
			method: 'get',
			onSuccess: function(t) {},
			on404: function(t) {destinationDivObj.innerHtml='Sistemde Hata Oluştu, lütfen daha sonra tekrar deneyiniz'},
			onFailure: function(t) {destinationDivObj.innerHtml='Sistemde Hata Oluştu, lütfen daha sonra tekrar deneyiniz'}
		}
		new Ajax.Updater(destinationDivId, url, opt);
	}
}