function getElementsByClassName(table){
	var arr = new Array(); 
	var elems = document.getElementsByTagName(table);
	
	
	for ( var i = 0; i < elems.length; i++ ){
			var elem = elems[i];
	
		if ( elem.className == table ){
			arr[arr.length] = elem;
		}
	}
	
	return arr;
}




function showPic(whichpic) {
	
  var hidepic = getElementsByClassName('table');
  
  if (hidepic.length > 0) {
	  hidepic[0].style.display = 'none';	
  }
  
  if (!document.getElementById("placeholder")) return true;
  
  var source = whichpic.getAttribute("href");
  var placeholder = document.getElementById("placeholder");
  placeholder.setAttribute("src",source);
  
  if (!document.getElementById("description")) return false;
  
  if (whichpic.getAttribute("title")) {
    var text = whichpic.getAttribute("title");
  }
  else {
    var text = "";
  }
  
  var description = document.getElementById("description");
  if (description.firstChild.nodeType == 3) {
    description.firstChild.nodeValue = text;
  }
  

  
  return false;
}

function prepareGallery() {
  if (!document.getElementsByTagName) return false;
  if (!document.getElementById) return false;
  if (!document.getElementById("smallpics")) return false;
  var gallery = document.getElementById("smallpics");
  var links = gallery.getElementsByTagName("a");
  for ( var i=0; i < links.length; i++) {
    links[i].onclick = function() {
      return showPic(this);
	}
    links[i].onkeypress = links[i].onclick;
  }
}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

addLoadEvent(prepareGallery);