function tmt_findObj(n){
	var x,t; if((n.indexOf("?"))>0&&parent.frames.length){t=n.split("?");
	x=eval("parent.frames['"+t[1]+"'].document.getElementById('"+t[0]+"')");
	}else{x=document.getElementById(n)}return x;
}

function preloadImages() { // Bryan Rocks v3.0
  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) { // Bryan Rocks v4.0
  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 && document.getElementById) x=document.getElementById(n); return x;
}

function showHideLayers() { // NN6 Compatibility
  var i,p,v,obj,args=showHideLayers.arguments;if(document.getElementById){
   for (i=0; i<(args.length-2); i+=3){ obj=tmt_findObj(args[i]);v=args[i+2];
   v=(v=='show')?'visible':(v='hide')?'hidden':v;
   if(obj)obj.style.visibility=v;}} else{
  for (i=0; i<(args.length-2); i+=3) if ((obj=findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }}
}

function layerAction(x){
	var hilitelayer, ddlayer;

if(x=="about"){
	hilitelayer = "ovabout"
	ddlayer = "aboutdropdown"
	showHideLayers('hideall','','show',1);
} else  {
	showHideLayers('ovabout', '','hide','aboutdropdown', '','hide',1);
}
if(x=="prod_serv"){
	hilitelayer = "ovprod_serv"
	ddlayer = "prod_servdropdown"
	showHideLayers('hideall','','show',1);
} else  {
	showHideLayers('ovprod_serv', '','hide','prod_servdropdown', '','hide',1);
}
if(x=="support"){
	hilitelayer = "ovsupport"
	ddlayer = "supportdropdown"
	showHideLayers('hideall','','show',1);
} else {
	showHideLayers('ovsupport','','hide','supportdropdown', '','hide',1);
}
if(x=="work"){
	hilitelayer = "ovwork"
	ddlayer = "workdropdown"
	showHideLayers('hideall','','show',1);
} else {
	showHideLayers('ovwork','','hide','workdropdown', '','hide',1);
}
if(x=="news"){
	hilitelayer = "ovnews"
	ddlayer = "newsdropdown"
	showHideLayers('hideall','','show',1);
} else {
	showHideLayers('ovnews','','hide','newsdropdown', '','hide',1);
}
if(x=="contact"){
	hilitelayer = "ovcontact"
	ddlayer = "contactdropdown"
	showHideLayers('hideall','','show',1);
} else {
	showHideLayers('ovcontact','','hide','contactdropdown', '','hide',1);
}

if(document.getElementById){
	menuId = document.getElementById(hilitelayer);
	menuId.style.visibility = "visible";
	menuId = document.getElementById(ddlayer);
	menuId.style.visibility = "visible";
} else if (document.all) {
	eval("document.all." + hilitelayer + ".style.visibility = 'visible'");
	eval("document.all." + ddlayer + ".style.visibility = 'visible'");
} else if (document.layers) {
	eval("document." + hilitelayer + ".visibility = 'show'");
	eval("document." + ddlayer + ".visibility = 'show'");
}
}
// end layeraction function