clib_onload("doRegisterFunction();");


function xchange (name, imagesrc)	{
	try {
	 d(name).src = imagesrc;
	}catch (ex){
		/** alert(ex.toString());**/
	}
}

function doRegisterFunction(){
	
	var items = getElementsByClass('td','nav_top_item');
	for(var i=0; i < items.length ; i++) {
		items[i].getElementsByTagName('div')[1].onmouseover=function(){ xchange ('swap_image','fileadmin/dev/img/animierte_stroecks.gif'); };	
		items[i].getElementsByTagName('div')[1].onmouseout=function(){ xchange ('swap_image','fileadmin/dev/img/top_rechts.gif'); };			
  }
}

function setImage(_id,_image){

	try {
    imageObj = d(_id).getElementsByTagName('img')[1];
    imageObj.src = _image;
  }catch (ex){
		/**alert(ex.toString());**/
	}
}



/**________page browser popup ___*/
	var contentElements;
  var currentElement;

function initPageBrowsing(uids){

var _string = new String(uids);
contentElements = _string.split(',');
currentElement = 0;
hideAllElements();
initNavigation();

}


function hideAllElements() {
		for (var i = 0; i < contentElements.length; ++i) {
			if (i == 0) continue;
			var _id = 'c'+ contentElements[i];
			d(_id).style.display = 'none';  
		}
}

function initNavigation(){
		if (contentElements.length > 1){
			d('next_button').style.visibility = 'visible';
		}
}
  
function setContent(step) {
	
	if (step == 0){
		currentElement = 0;
		step = 0;
		hideAllElements()
	}
	
	var _id = 'c'+ contentElements[currentElement];
	d(_id).style.display = 'none';  
	 _id = 'c'+ contentElements[currentElement + step];
	d(_id).style.display = 'block'; 
	
	currentElement = currentElement + step ;
	doRefreshNavigation(1);
}
function hideNavigstion(){
	
	
}

function doRefreshNavigation(_action){
	
	if (_action == 0) {
		d('next_button').style.visibility = 'hidden';
	  d('preview_button').style.visibility = 'hidden';
	  return;
	}
	if (currentElement >= (contentElements.length -1)){
	  d('next_button').style.visibility = 'hidden';
	  d('preview_button').style.visibility = 'visible';
	  return;
  }
  if (currentElement == 0){
	  d('preview_button').style.visibility = 'hidden';
	  d('next_button').style.visibility = 'visible';
	  return;
  }
   d('preview_button').style.visibility = 'visible';
	 d('next_button').style.visibility = 'visible';
	
}