var navImgOff = new Array (13)
for (var i=0; i < navImgOff.length ; i++) {
navImgOff[i] = new Image(130,25);
navImgOff[i].src = "images/leftnav/button" + (i+1) + "_off.gif"}

var navImgOn = new Array (13)
for (var i=0; i < navImgOn.length ; i++)
{ navImgOn[i] = new Image(130,25);
navImgOn[i].src = "images/leftnav/button" + (i+1) + "_on.gif"}

var navImgBelow = new Array (13)
for (var i=0; i < navImgBelow.length ; i++)
{ navImgBelow[i] = new Image(130,25);
navImgBelow[i].src = "images/leftnav/button" + (i+1) + "_below.gif"}


function on(i)
{
if (i==1){
document.but1.src = navImgOn[i-1].src;
document.but2.src = navImgBelow[i-1].src
}
if (i==2){
document.but2.src = navImgOn[i-1].src;
document.but3.src = navImgBelow[i-1].src
}
if (i==3){
document.but3.src = navImgOn[i-1].src;
document.but4.src = navImgBelow[i-1].src
}
if (i==4){
document.but4.src = navImgOn[i-1].src;
document.but5.src = navImgBelow[i-1].src
}
if (i==5){
document.but5.src = navImgOn[i-1].src;
document.but6.src = navImgBelow[i-1].src
}
if (i==6){
document.but6.src = navImgOn[i-1].src;
document.but7.src = navImgBelow[i-1].src
}
if (i==7){
document.but7.src = navImgOn[i-1].src;
document.but8.src = navImgBelow[i-1].src
}
if (i==8){
document.but8.src = navImgOn[i-1].src;
document.but9.src = navImgBelow[i-1].src
}
if (i==9){
document.but9.src = navImgOn[i-1].src;
document.but10.src = navImgBelow[i-1].src
}
if (i==10){
document.but10.src = navImgOn[i-1].src;
document.but11.src = navImgBelow[i-1].src
}
if (i==11){
document.but11.src = navImgOn[i-1].src;
document.but12.src = navImgBelow[i-1].src
}
if (i==12){
document.but12.src = navImgOn[i-1].src;
document.but13.src = navImgBelow[i-1].src
}


//document.images[i].src = navImgOn[i];
//document.images[i+1].src = navImgBelow[i]
}


function off(i)
{

if (i==1){
document.but1.src = navImgOff[i-1].src;
document.but2.src = navImgOff[i].src
}
if (i==2){
document.but2.src = navImgOff[i-1].src;
document.but3.src = navImgOff[i].src
}
if (i==3){
document.but3.src = navImgOff[i-1].src;
document.but4.src = navImgOff[i].src
}
if (i==4){
document.but4.src = navImgOff[i-1].src;
document.but5.src = navImgOff[i].src
}
if (i==5){
document.but5.src = navImgOff[i-1].src;
document.but6.src = navImgOff[i].src
}
if (i==6){
document.but6.src = navImgOff[i-1].src;
document.but7.src = navImgOff[i].src
}
if (i==7){
document.but7.src = navImgOff[i-1].src;
document.but8.src = navImgOff[i].src
}
if (i==8){
document.but8.src = navImgOff[i-1].src;
document.but9.src = navImgOff[i].src
}
if (i==9){
document.but9.src = navImgOff[i-1].src;
document.but10.src = navImgOff[i].src
}
if (i==10){
document.but10.src = navImgOff[i-1].src;
document.but11.src = navImgOff[i].src
}
if (i==11){
document.but11.src = navImgOff[i-1].src;
document.but12.src = navImgOff[i].src
}
if (i==12){
document.but12.src = navImgOff[i-1].src;
document.but13.src = navImgOff[i].src
}

//document.images[i].src = navImgOff[i];
//document.images[i+1].src = navImgOff[i+1]

} 

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_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) { //v4.0
  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=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.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];}
}