function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}
function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//Preload images first
MM_preloadImages('/dctracker.nsf/home_on.gif','/dctracker.nsf/about_on.gif','/dctracker.nsf/products_on.gif','/dctracker.nsf/services_on.gif','/dctracker.nsf/news_on.gif','/dctracker.nsf/contact_on.gif');
//Detect browser and show css accordingly
if((navigator.appName == "Netscape")&& (parseInt(navigator.appVersion) < 5))
	{	
		document.write('<link rel="stylesheet" href="/dctracker.nsf/ns.css" type="text/css">'); 
	}
	else
	{	
		document.write('<link rel="stylesheet" href="/dctracker.nsf/ie.css" type="text/css">'); 
	}
// detect brower here it ends 
 function validate()
 {
	x=document.myForm
	at=x.myEmail.value.indexOf("@")
	addr=x.myEmail.value
	dot=x.myEmail.value.indexOf(".")
	 
	submitOK="True"
	if (at==-1) 
	 {
		alert("Please enter a valid e-mail address.")
		x.myEmail.focus()
		submitOK="False"
		return false
	 }
	 else if (dot==-1) 
	 {
		alert("Please enter a valid e-mail address.")
		x.myEmail.focus()
		submitOK="False"
		return false
	 }
	 else if (addr.length<3)
	 {
		alert("Please enter a valid e-mail address.")
		x.addr.focus()
		submitOK="False"
		return false
	 }
	  
	if (submitOK=="False")
	  {
		return false
	  }
}
<!--
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
function change_src(id)
{
	window.location = "news.htm#"+id;
}