// ****************************************************
// * menu.js
// *   Provides javascript for the drop down menu located
// *     on the top of each webpage.  This menu appears
// *     when a mouse hovers over the menu item, and 
// *     disappears on mouse out.
// *  This also provides javascript to make the menu items
// *     swap images when a mouse hovers over them
// ****************************************************

var timerID = "0";

function hideMenus() 
{
   MM_showHideLayers('ABOUT','','hide','SERVICES','','hide','CONTACT','','hide');
   hideMenuSelect();
}

function hideMenuSelect()
{
   MM_swapImage('about','','gfx/about_r.gif',1);
   MM_swapImage('services','','gfx/services_r.gif',1);
   MM_swapImage('contacts','','gfx/contact_r.gif',1);
}

function startTimer()
{
   stopTimer();
   
   //Parameters: method to execute when timer runs out, milliseconds until timeout
   timerID = setTimeout("hideMenus()", 300);
}

function stopTimer()
{
   clearTimeout(timerID);
}   
	
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_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_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_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 MM_callJS(jsStr) { //v2.0
  return eval(jsStr)
}

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_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];}
}