function startUp() {
   window.onresize=resizeWindow;
   resizeWindow();
   getData('overview');
}
 
function resizeWindow() {
  var theHeader=document.getElementById("headerDiv");
  //var theFooter=document.getElementById("footerDiv");
  var theContent=document.getElementById("contentDiv");
	//var theIndex=document.getElementById("indexDiv");
  theHeader.style.width=document.body.clientWidth;
  theHeader.style.height=45;
  //theFooter.style.width=document.body.clientWidth;
  //theFooter.style.height=35;
  theContent.style.width=document.body.clientWidth-325;
  theContent.style.height=document.body.clientHeight-102;
	//theIndex.style.height=document.body.clientHeight-102;
}
 
function GetXmlHttpObject() { 
  var objXMLHttp=null
  if (window.XMLHttpRequest) {
    objXMLHttp=new XMLHttpRequest()
  }
  else if (window.ActiveXObject) {
    objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
  }
  return objXMLHttp
}
 
var divRequest;
var oldPage="overview";
function getData(page) { 
  clearPicture();
  clearOld=document.getElementById(oldPage);
  clearOld.innerHTML=" "
	
  theCurrent=document.getElementById(page);
  theCurrent.innerHTML="";
  theCurrent.innerHTML="<img src='index_resources/images/Bullet2.png' alt=''>";
	
  divRequest=GetXmlHttpObject();		
  divRequest.onreadystatechange=populateDiv;							 
  divRequest.open("GET", "index_resources/VisualBasicNET/" + page + ".txt?" + Math.random, true);
  divRequest.send(null);
	oldPage=page;
}			
 
function populateDiv() {
  if (divRequest.readyState==4) {
     var displayDiv=document.getElementById("mainDiv");
     displayDiv.innerHTML="";
     var data=divRequest.responseText;	
     displayDiv.innerHTML=data	
  }
}

function showPicture(thePicture) {
  theCurrent=document.getElementById("imageDiv");
  theCurrent.innerHTML="";
  theCurrent.innerHTML="<img src='index_resources/images/" + thePicture + ".jpg' alt='active topic' border=1>";
}

function clearPicture() {
  thePicture=document.getElementById("imageDiv");
  thePicture.innerHTML="";
  theDetail=document.getElementById("detailDiv");
  theDetail.innerHTML="";
}