Question

IE continues to give me an error on the next-to-last line stating “Object required”. I am not sure where the issue would be. Any advice?

function showdiv()
{
  document.getElementById("dialogue").style.display = "";
  document.getElementById("screen").style.display = "";
  document.getElementById("screen").style.width = getBrowserWidth();
}
function hidediv(opt){
if(opt=="agree"){
  document.Annexation.checkbox.checked = true;
  document.getElementById("dialogue").style.display = "none";
  document.getElementById("dialogue").style.display = "none";
  document.getElementById("screen").style.display = "none";
}else{
  document.getElementById("dialogue").style.display = "none";
  document.getElementById("screen").style.display = "none";
}}

window.onscroll = scrollEvent;
function scrollEvent() {
var y;
if (document.documentElement && !document.documentElement.scrollTop)
  // IE6 +4.01 but no scrolling going on
  y=document.documentElement.scrollTop; 
else if (document.documentElement && document.documentElement.scrollTop){
  // IE6 +4.01 and user has scrolled
  y=document.documentElement.scrollTop;
}
else if (document.body && document.body.scrollTop){
  // IE5 or DTD 3.2
  y=document.body.scrollTop;
}
  document.getElementById("screen").style.top = y+"px";
} 

Answer 1

One of the following probably returns null:

document.getElementById("dialogue")
document.getElementById("screen")
document.Annexation
document.Annexation.checkbox

or getBrowserWidth is not defined.