function Is() {
  var agent = navigator.userAgent.toLowerCase();
  this.major = parseInt(navigator.appVersion);
  this.minor = parseFloat(navigator.appVersion);
  this.ns = ((agent.indexOf('mozilla')!=-1) && ((agent.indexOf('spoofer')==-1) && (agent.indexOf('compatible') == -1)));
  this.ns4up = (this.ns && (this.major >= 4));
  this.ns6up = (this.ns && (this.major >= 5));
  this.ie = (agent.indexOf("msie") != -1);
  this.ie4up = (this.ie && (this.major >= 4));
  this.win = (agent.indexOf("win")!=-1);
  this.mac = (agent.indexOf("mac")!=-1);
}
var is = new Is();

function showMenu(ID)
{
hideMenus();
screen_width = screen.width;
	screen_height = screen.height;
	if(is.ns4up) {
		available_width=innerWidth;
		available_height=innerHeight;
	} 
	else if(is.ie4up) {
		available_width=document.body.clientWidth;
		available_height=document.body.clientHeight;
	}
	available_width = available_width - 1034;
	xoffset = parseInt(available_width / 2,10);
	
	//name="SUBWho"
    if (ID == 1) {
        document.getElementById('DropMenu1').style.left = (226 + xoffset) + "px";
        document.getElementById('DropMenu1').style.display = "block";
        document.getElementById('SUBWho').src = "graphics/design/btnsubwho_on.gif"; }
    else if (ID == 2) {
        document.getElementById('DropMenu2').style.left = (326 + xoffset) + "px";
        document.getElementById('DropMenu2').style.display = "block";
        document.getElementById('SUBWhat').src = "graphics/design/btnsubwhat_on.gif"; }
}
function hideMenus()
{
    document.getElementById('DropMenu1').style.display = "none";
    document.getElementById('DropMenu2').style.display = "none";
    if (document.location.search.indexOf("2") < 0)
        document.getElementById('SUBWho').src = "graphics/design/btnsubwho_off.gif";
    if (document.location.search.indexOf("3") < 0)
        document.getElementById('SUBWhat').src = "graphics/design/btnsubwhat_off.gif";

}

function swapImgRestore() {
  var i,x,a=document.sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function preloadImages() {
  var d=document; if(d.images){ if(!d.p) d.p=new Array();
    var i,j=d.p.length,a=preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.p[j]=new Image; d.p[j++].src=a[i];}}
}

function findObj(n, d) {
  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=findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function swapImage() {
  var i,j=0,x,a=swapImage.arguments; document.sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=findObj(a[i]))!=null){document.sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}

   if (a[0]== "SUBWho")
   showMenu(1);  
}

function popISO() {
	var ISOWindow = document.getElementById('wdwISO9001');
	if (ISOWindow.style.visibility == "visible")
		{
			ISOWindow.style.visibility = "hidden";
		}
	else
		{
			ISOWindow.style.visibility = "visible";
		}
}

function HLSpan(x)
{
	document.getElementById(x).style.background = "#fffe9e";
}
function undoHLSpan(x)
{
	document.getElementById(x).style.background = "Transparent";
}