if (document.images) {
var darkened_pics = new Array();
var lighted_pics = new Array();
var darkened_pics_sub = new Array();
var lighted_pics_sub = new Array();
}

function preloadButtonSet(num,dark,light) {
darkened_pics[num] = new Image();
darkened_pics[num].src = dark;
lighted_pics[num] = new Image();
lighted_pics[num].src = light;
}

function preloadButtonSet_sub(num_sub,dark_sub,light_sub) {
darkened_pics_sub[num_sub] = new Image();
darkened_pics_sub[num_sub].src = dark_sub;
lighted_pics_sub[num_sub] = new Image();
lighted_pics_sub[num_sub].src = light_sub;
}

function darken(num) {
if (document.images)
eval("document.nav"+num+".src = darkened_pics["+num+"].src;");
}

function darken_sub(num_sub) {
if (document.images)
eval("document.nav"+num_sub+".src = darkened_pics_sub["+num_sub+"].src;");
}

function lighten(num) {
if (document.images)
eval("document.nav"+num+".src = lighted_pics["+num+"].src;");
}

function lighten_sub(num_sub) {
if (document.images)
eval("document.nav"+num_sub+".src = lighted_pics_sub["+num_sub+"].src;");
}
function selectnav(num) {
if (document.images)
eval("document.nav"+num+".src = lighted_pics["+num+"].src;");
//print("document.nav"+num+".src = lighted_pics["+num+"].src;");
}

function selectnav_sub(num_sub) {
if (document.images)
eval("document.nav"+num_sub+".src = lighted_pics_sub["+num_sub+"].src;");
//print("document.nav"+num+".src = lighted_pics["+num+"].src;");
}


// MODIFY THE VARIABLES BETWEEN THESE COMMENTS
// Define the image swapping in the following format:
// preloadButtonSet(button_num,dark_button_src,light_button_src)
preloadButtonSet(1,"images/nav/get.gif","images/nav/get_on.gif");
preloadButtonSet(2,"images/nav/history.gif","images/nav/history_on.gif");
preloadButtonSet(3,"images/nav/whoswho.gif","images/nav/whoswho_on.gif");
preloadButtonSet(4,"images/nav/contactus.gif","images/nav/contactus_on.gif");
preloadButtonSet(5,"images/nav/rentals.gif","images/nav/rentals_on.gif");
preloadButtonSet(6,"images/nav/events.gif","images/nav/events_on.gif");
preloadButtonSet(7,"images/nav/education.gif","images/nav/education_on.gif");
preloadButtonSet(8,"images/nav/archive.gif","images/nav/archive_on.gif");
// MODIFY THE VARIABLES BETWEEN THESE COMMENTS

// MODIFY THE VARIABLES BETWEEN THESE COMMENTS
// Define the image swapping in the following format:
// preloadButtonSet(button_num,dark_button_src,light_button_src)
preloadButtonSet_sub(1,"images/nav/get_sub.gif","images/nav/get_sub_on.gif");
preloadButtonSet_sub(2,"images/nav/history_sub.gif","images/nav/history_sub_on.gif");
preloadButtonSet_sub(3,"images/nav/whoswho_sub.gif","images/nav/whoswho_sub_on.gif");
preloadButtonSet_sub(4,"images/nav/contactus_sub.gif","images/nav/contactus_sub_on.gif");
preloadButtonSet_sub(5,"images/nav/rentals_sub.gif","images/nav/rentals_sub_on.gif");
preloadButtonSet_sub(6,"images/nav/events_sub.gif","images/nav/events_sub_on.gif");
preloadButtonSet_sub(7,"images/nav/education_sub.gif","images/nav/education_sub_on.gif");
preloadButtonSet_sub(8,"images/nav/archive_sub.gif","images/nav/archive_sub_on.gif");
// MODIFY THE VARIABLES BETWEEN THESE COMMENTS

// function to validate input
function checkInput() {
  var missing=focusVal=""
  df=document.forms[0]
  arg_num = arguments.length
  j=1
  for(i=0;i<arg_num;i=i+2) {
     current_val = eval("df."+arguments[i]+".value")
     if ( current_val == "" ) {
            missing += "- " + arguments[j] + "\n"
        if ( focusVal=="" ) focusVal = arguments[i]
         }
         j=j+2
  }

  if (missing != "") {
    alert("The following information is required:\n"+missing)
        df.item(focusVal).focus()
        return false
  }
}

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];}
}


function Toggle(item) {
   obj=document.getElementById(item);
   visible=(obj.style.display!="none")
   key=document.getElementById("x" + item);
   if (visible) {
     obj.style.display="none";
     key.innerHTML="<img src='images/plus.gif' width='9' height='9' hspace='0' vspace='0' border='0'>";
   } else {
      obj.style.display="block";
      key.innerHTML="<img src='images/minus.gif' width='9' height='9' hspace='0' vspace='0' border='0'>";
   }
}