/*********************************************************************************
make Rollovers
*********************************************************************************/
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) { //v4.01
  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];}
}


/*********************************************************************************
handle scrolling iframe
*********************************************************************************/
/*************************************************************************
  This code is from Dynamic Web Coding at http://www.dyn-web.com/
  See Terms of Use at http://www.dyn-web.com/bus/terms.html
  regarding conditions under which you may use this code.
  This notice must be retained in the code as is!
*************************************************************************/

var timer_id;
function scroll_iframe(frm,inc,dir) {
  if (timer_id) clearTimeout(timer_id);
  if (window.frames[frm]) {
    if (dir == "v") window.frames[frm].scrollBy(0, inc);
    else window.frames[frm].scrollBy(inc, 0);

    timer_id = setTimeout("scroll_iframe('" + frm + "'," + inc + ",'" + dir + "')", 20);
	//set_arrow_visibility(frm);
  }
}

function stopScroll() { if (timer_id) clearTimeout(timer_id); }

function getDocHeight(doc) {
  var docHt = 0, sh, oh;
  if (doc.height) docHt = doc.height;
  else if (doc.body) {
    if (doc.body.scrollHeight) docHt = sh = doc.body.scrollHeight;
    if (doc.body.offsetHeight) docHt = oh = doc.body.offsetHeight;
    if (sh && oh) docHt = Math.max(sh, oh);
  }
  return docHt;
}

function getObj(name) {
	var obj = document.getElementById? document.getElementById(name): document.all? document.all[name]: null;
	return obj;
}

function set_visibility(frm,dir) {
  
  if(!frm) frm = 'content';
  //var frm = 'content';
  var iframeWin = window.frames[frm];
  var iframeEl = document.getElementById? document.getElementById(frm): document.all? document.all[frm]: null;
  iframeEl.style.visibility = 'visible';
  if ( iframeEl && iframeWin ) {
    //iframeEl.style.height = "auto"; // helps resize (for some) if new doc shorter than previous  
    var docHt = getDocHeight(iframeWin.document);
	
	// enter frame height
	if (docHt > iframeEl.height) {
		var dArrow = getObj('downArrow');
		dArrow.style.visibility = 'visible';
		var uArrow = getObj('upArrow');
		uArrow.style.visibility = 'visible';
	} else {
		var dArrow = getObj('downArrow');
		dArrow.style.visibility = 'hidden';
		var uArrow = getObj('upArrow');
		uArrow.style.visibility = 'hidden';		
	}
    // need to add to height to be sure it will all show
    //if (docHt) iframeEl.style.height = docHt + 30 + "px";
  } else alert('else');


	//alert(docHt);
	//thetable = window.frames[frm].document.getElementById(tracks);
	//if (true) alert("Test");
	
}