// JavaScript Document

if(window.location.hash.indexOf("grade")!=-1){
	var grade = window.location.hash.substr(6,1);
}

function hideDivs(exempt)
{
  if (!document.getElementsByTagName) return null;
  if (!exempt) {
  	if(window.location.hash){
		var hash = window.location.hash;
		var exempt = hash.substring(1,hash.length)+"div";
	} else {
		exempt ="";
	}
  }
  var divs = document.getElementsByTagName("div");
  for(var i=0; i < divs.length; i++)
  {
    var div = divs[i];
    var id = div.id;
	if (id.indexOf("grade") != -1)
    {
      div.style.marginTop = "";
      div.className = "hidden";
    } 
  }
  for(var i=0; i < divs.length; i++)
  {
    var div = divs[i];
    var id = div.id;
    if(id.indexOf("grade")!= -1 && (id == exempt))
	{
	  div.style.marginTop = "-83px";
	  div.className = "gradepod";
	  
	}
  }
  if(document.getElementById(exempt)){
  	sendFocus(exempt);
  }
}

function sendFocus(what)
{
  var obj = document.getElementById(what);
  if (obj.focus) {
  	obj.focus();
  }
}

function show(what)
{
  if (!document.getElementById) return null;
  showWhat = document.getElementById(what);
  showWhat.className = "gradepod";
  hideDivs(what);
}
function refreshLocation()
{
	var wl = window.location; 
	var ms = new Date().getTime(); 
	var srch = (wl.search.indexOf('&cb=')!=-1) ? wl.search.substring(0,wl.search.indexOf('&cb=')) : wl.search;
	wl.replace(wl.pathname+srch+'&cb='+ms+wl.hash);
}
window.onload = function()
{
  	hideDivs();
	MM_preloadImages('/kids/sv/books/content/wordbuilder/graphics/wb_btn_back.gif','/kids/sv/books/content/wordbuilder/graphics/wb_btn_back_o.gif','graphics/wb_1_o.gif','/kids/sv/books/content/wordbuilder/graphics/wb_2_o.gif','/kids/sv/books/content/wordbuilder/graphics/wb_3_o.gif','/kids/sv/books/content/wordbuilder/graphics/wb_4_o.gif','/kids/sv/books/content/wordbuilder/graphics/wb_6_o.gif','/kids/sv/books/content/wordbuilder/graphics/wb_5_o.gif');
	updateScreenDimensions();
}