HTML - Ie 6 And Ie7 Menu Problems

#dropmenudiv{
position:absolute;
border:1px solid black;
border-bottom-width: 0;
font:normal 12px Verdana;
line-height:18px;
z-index:100;
}

#dropmenudiv a{
width: 100%;
display: block;
text-indent: 3px;
border-bottom: 1px solid black;
padding: 1px 0;
text-decoration: none;
font-weight: bold;
}

#dropmenudiv a:hover{ 
color:#000000;
background-color: #cc0000;
}

<script type="text/javascript">

var menu1=new Array()
menu1[0]='<a href="group.html">About (group)</a>'
menu1[1]='<a href="officers.html">Current Officers</a>'
menu1[2]='<a href="officerjoin.html">Become an Officer</a>'

var menu2=new Array()
menu2[0]='<a href="meetings.html">Meetings</a>'
menu2[1]='<a href="alumniday.html">Alumni Day</a>'
menu2[2]='<a href="industryday.html">Industry Day</a>'
		
var menuwidth='165px'
var menubgcolor='lightyellow' 
var disappeardelay=50  
var hidemenu_onclick="yes" 


var ie4=document.all
var ns6=document.getElementById&&!document.all

if (ie4||ns6)
document.write('<div id="dropmenudiv" style="visibility:hidden;width:'+menuwidth+';background-color:'+menubgcolor+'" onMouseover="clearhidemenu()" onMouseout="dynamichide(event)"></div>')

function getposOffset(what, offsettype){
var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
var parentEl=what.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}

function showhide(obj, e, visible, hidden, menuwidth){
if (ie4||ns6)
dropmenuobj.style.left=dropmenuobj.style.top="-500px"
if (menuwidth!=""){
dropmenuobj.widthobj=dropmenuobj.style
dropmenuobj.widthobj.width=menuwidth
}
if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
obj.visibility=visible
else if (e.type=="click")
obj.visibility=hidden
}

function iecompattest(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function clearbrowseredge(obj, whichedge){
var edgeoffset=0
if (whichedge=="rightedge"){
var windowedge=ie4 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth
}
else{
var topedge=ie4 && !window.opera? iecompattest().scrollTop : window.pageYOffset
var windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ //move up?
edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight
if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) //up no good either?
edgeoffset=dropmenuobj.y+obj.offsetHeight-topedge
}
}
return edgeoffset
}

function populatemenu(what){
if (ie4||ns6)
dropmenuobj.innerHTML=what.join("")
}


function dropdownmenu(obj, e, menucontents, menuwidth){
if (window.event) event.cancelBubble=true
else if (e.stopPropagation) e.stopPropagation()
clearhidemenu()
dropmenuobj=document.getElementById? document.getElementById("dropmenudiv") : dropmenudiv
populatemenu(menucontents)

if (ie4||ns6){
showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
dropmenuobj.x=getposOffset(obj, "left")
dropmenuobj.y=getposOffset(obj, "top")
dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px"
dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px"
}

return clickreturnvalue()
}

function clickreturnvalue(){
if (ie4||ns6) return false
else return true
}

function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function dynamichide(e){
if (ie4&&!dropmenuobj.contains(e.toElement))
delayhidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
delayhidemenu()
}

function hidemenu(e){
if (typeof dropmenuobj!="undefined"){
if (ie4||ns6)
dropmenuobj.style.visibility="hidden"
}
}

function delayhidemenu(){
if (ie4||ns6)
delayhide=setTimeout("hidemenu()",disappeardelay)
}

function clearhidemenu(){
if (typeof delayhide!="undefined")
clearTimeout(delayhide)
}

if (hidemenu_onclick=="yes")
document.onclick=hidemenu

</script>

<li><a href="events.html" onClick="return clickreturnvalue()" onMouseover="dropdownmenu(this, event, menu2, '150px')" onMouseout="delayhidemenu()">Events</a> </li>

<script type="text/javascript">
AC_FL_RunContent( 'codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0','width','900','height','140','src','GoodDock','quality','high','pluginspage','http://www.macromedia.com/go/getflashplayer','movie','GoodDock' ); //end AC code
</script><noscript><object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" width="900" height="140">
  <param name="movie" value="images/GoodDock.swf" />
  <param name="quality" value="high" />
  <embed src="images/GoodDock.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="900" height="140"></embed>
</object></noscript>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link href="styles.css" rel="stylesheet" type="text/css">
<title>Darren Ng - Future Pilot</title>
</head>

<body>
		<div id="wrapper">
			<div id="header">
				<div id="logo">
					<h1><a href="index.html"><span>Darren's</span> Website</a></h1>
								<table><tr>              	<ul id="menu">
					<li><a class="current" href="#">Home</a></li>
					<li><a href="#">Practice</a></li>
					<li><a href="#">Attorneys</a></li>
					<li><a href="#">Accidents</a></li>
					<li><a href="#">News</a></li>
					<li><a href="#">About Us</a></li>
</tr></table></div>
									
				<div class="clr"></div>
			</div>
			
<table width="100%" height="100%"  border="0" cellpadding="0" cellspacing="0">
    <td align="center" valign="middle"><table width="1000" height="550"  border="0" align="center" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF">
            <tr>
        <td width="1000" height="360" align="center"><img src="images/header.gif" width="1000" height="360" hspace="0" vspace="0" border="0" align="top" usemap="#MapMap"></td>
      </tr>

body {
				font: .74em Tahoma, Verdana, Sans-Serif, Arial;
				color: #7f7f7f;
				background-image: url('images/bodypixel.gif');
				background-repeat: repeat;
}
h1 { font: normal 5em "Trebuchet MS", Helvetica, Arial; }
p { margin: 0 0 15px; line-height: 1.6em; }
a { outline: 0; color: #304D6F; text-decoration: none; }
li { list-style: none; }
li a, img { display: block; }
img { outline: 0; border: 0; }
#wrapper { width: 984px; margin: auto; }
.clr { clear: both; }
#logo { float: left; padding: 30px 15px; }
	#logo h1 a { color: #fff; }
		#logo h1 a span { color: #808080; }
#menu { height: 44px; padding: 5px 0 0 4px; }
	#menu li { float: left; font-size: 1.3em; text-transform: uppercase; }
		#menu li a { color: #888; margin: 0 50px 0 0; }
			#menu li a:hover { color: #fff; }		
			#menu li a.current { color: #fff; }