/* Browser check */
IS_DOM = (document.getElementById) ? true : false;
IS_IE = (document.all) ? true : false;
IS_IE50 = (navigator.userAgent.indexOf("IE 5.0") != -1);
IS_Mac = (navigator.appVersion.indexOf("Mac") != -1);

// preload level 1 mains
var topLevelNav = new Array();
topLevelNav = ["", "about-discovering-digits", "for-students", "for-parents", "for-teachers", "become-a-member", "btn-learn-more", "btn-parent-sign-up", "btn-enter","btn-teacher-sign-up"];
for (var i = 0; i < topLevelNav.length; i++) { 
	eval("main" + i + "on = new Image();"); eval("main" + i + "off = new Image();");
	eval("main" + i + "on.src = \"" + sFolderDepth + "img/home/" + topLevelNav[i] + "-r.gif\";");
	eval("main" + i + "off.src = \"" + sFolderDepth + "img/home/" + topLevelNav[i] + "-0.gif\";");
}

// preload level 1 subs
var subTopLevelNav = new Array();
subTopLevelNav = ["", "about-discovering-digits", "for-students", "for-parents", "for-teachers", "become-a-member"];
for (var i = 0; i < subTopLevelNav.length; i++) { 
	eval("sub" + i + "on = new Image();"); eval("sub" + i + "off = new Image();");
	eval("sub" + i + "on.src = \"" + sFolderDepth + "img/navigation/" + subTopLevelNav[i] + "-r.gif\";");
	eval("sub" + i + "off.src = \"" + sFolderDepth + "img/navigation/" + subTopLevelNav[i] + "-0.gif\";");
	if (sSelectedNavigation == subTopLevelNav[i]) {
		eval("sub" + i + "on.src = \"" + sFolderDepth + "img/navigation/" + subTopLevelNav[i] + "-1.gif\";");
		eval("sub" + i + "off.src = \"" + sFolderDepth + "img/navigation/" + subTopLevelNav[i] + "-1.gif\";");
	}
}

// sublevel content (bubble) buttons
switch (sSelectedL2Page) {
   case "home" :
      siteButtons = ["", "home-sign-up", "home-try-it-out", "home-read", "home-im-ready","home-donation"];
      break;
    case "challenges" :
      siteButtons = ["", "challenges-sign-up", "challenges-try-it-out", "challenges-im-ready", "challenges-my-progress", "print-your-certificate", "print-your-eye-patch","challenges-donation"];
      break;
   case "stadium" :
      siteButtons = ["", "sports-sign-up", "sports-try-it-out", "sports-read", "sports-im-ready", "activity-try-it-out", "activity-im-ready","sports-donation"];
      break;
   case "bank" :
      siteButtons = ["", "bank-sign-up", "bank-try-it-out", "bank-read", "bank-im-ready", "activity-try-it-out", "activity-im-ready","bank-donation"];
      break;
   case "store" :
      siteButtons = ["", "store-sign-up", "store-try-it-out", "store-read", "store-im-ready", "shall-we-begin","store-donation"];
      break;
    case "art-center" :
      siteButtons = ["", "arts-sign-up", "arts-try-it-out", "arts-read", "arts-im-ready", "activity-try-it-out", "activity-im-ready","arts-donation"];
      break;
   case "health-club" :
      siteButtons = ["", "health-sign-up", "health-try-it-out", "health-read", "health-im-ready", "activity-try-it-out", "activity-im-ready","health-donation"];
      break;
   case "the-park" :
      siteButtons = ["", "park-sign-up", "park-try-it-out", "park-read", "park-im-ready","park-donation"];
      break;
   case "magazine" :
      siteButtons = ["", "magazine-sign-up", "magazine-try-it-out", "magazine-view-now"];
      break;
   case "dd-club" :
      siteButtons = ["", "dd-club-sign-up", "dd-club-try-it-out","dd-club-donation"];
	  
      break;
  default :
	  siteButtons = [""];
	}

for (var i = 0; i < siteButtons.length; i++) { 
	//alert(siteButtons[i])
	eval("button" + i + "on = new Image();"); eval("button" + i + "off = new Image();");
	eval("button" + i + "on.src = \"" + sFolderDepth + "img/buttons/" + siteButtons[i] + "-r.gif\";");
	eval("button" + i + "off.src = \"" + sFolderDepth + "img/buttons/" + siteButtons[i] + "-0.gif\";");
}

// sublevel navigation buttons
switch (sSelectedNavigation) {
   case "about-discovering-digits" :
      aNavigation = ["", "overview", "mission", "careers", "certifications", "awards"];
      break;
   case "for-students" :
      aNavigation = ["", "home", "challenges", "stadium", "bank", "store", "art-center", "health-club", "the-park", "magazine", "dd-club", "help"];
      break;
   case "for-parents" :
      aNavigation = ["", "overview", "benefits", "tour", "membership", "family-focus", "learning-tips", "my-profile"];
      break;
   case "for-teachers" :
      aNavigation = ["", "overview", "benefits", "tour", "membership", "forum", "calendar", "enrichment-center", "tutorials", "my-profile"];
      break;
   case "become-a-member" :
      aNavigation = ["", "overview", "sign-up"];
      break;
	default :
	  aNavigation = [""];
	}
for (var i = 0; i < aNavigation.length; i++) { 
	eval("A" + i + "on = new Image();"); eval("A" + i + "off = new Image();");
	eval("A" + i + "on.src = \"" + sFolderDepth + "img/navigation/l2-" + aNavigation[i] + "-r.gif\";");
	eval("A" + i + "off.src = \"" + sFolderDepth + "img/navigation/l2-" + aNavigation[i] + "-0.gif\";");
	if (sSelectedL2Page == aNavigation[i]) {
		eval("A" + i + "off.src = \"" + sFolderDepth + "img/navigation/l2-" + aNavigation[i] + "-r.gif\";");
	}
}

// sublevel navigation buttons
switch (sSelectedL2Page) {
   case "Investors" :
      aNavigation = ["", "stock-quote", "stock-chart", "financial-releases"];
      break;
   case "Careers" :
      aNavigation = ["", "job-openings"];
      break;
	default :
	  aNavigation = [""];
	}
for (var i = 0; i < aNavigation.length; i++) { 
	eval("A" + i + "on = new Image();"); eval("A" + i + "off = new Image();");
	eval("A" + i + "on.src = \"" + sFolderDepth + "img/navigation/l2-" + aNavigation[i] + "-r.gif\";");
	eval("A" + i + "off.src = \"" + sFolderDepth + "img/navigation/l2-" + aNavigation[i] + "-0.gif\";");
	if (sSelectedL3Page == aNavigation[i]) {
		eval("A" + i + "off.src = \"" + sFolderDepth + "img/navigation/l2-" + aNavigation[i] + "-r.gif\";");
	}
}

// Image Swapping
function changeImages() 
{
  if (document.getElementById) {
    
    for (var i = 0; i < changeImages.arguments.length; i += 2) { 
		
  		document.getElementById(changeImages.arguments[i]).src = eval(changeImages.arguments[i + 1] + ".src"); 
	}
  }
}

// centered popup window script
function centeredPopUpWindow(mypage, myname, w, h, scroll)
{
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable'
	win = window.open(mypage, myname, winprops)
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}