// JScript File

var timerlen = 5;
var slideAniLen = 500;

var timerID = new Array();
var startTime = new Array();
var obj = new Array();
var endHeight = new Array();
var moving = new Array();
var dir = new Array();

function slidedown(objname){
  if(moving[objname])
    return;
 
  if(document.getElementById(objname).style.display != "none")
    return; // cannot slide down something that is already visible
 
  moving[objname] = true;
  dir[objname] = "down";
  startslide(objname);
}
 
function slideup(objname){
  if(moving[objname])
    return;
 
  if(document.getElementById(objname).style.display == "none")
    return; // cannot slide up something that is already hidden
 
  moving[objname] = true;
  dir[objname] = "up";
  startslide(objname);
}

/*
function startslide(objname){
  obj[objname] = document.getElementById(objname);
 
  endHeight[objname] = parseInt(obj[objname].style.height);
  startTime[objname] = (new Date()).getTime();
 
  if(dir[objname] == "down"){
    obj[objname].style.height = "1px";
  }
 
  obj[objname].style.display = "block";
 
  timerID[objname] = setInterval('slidetick(\'' + objname + '\');',timerlen);
}
*/


function startslide(objname){
	obj[objname] = document.getElementById(objname);

	if(dir[objname] == "down"){
	obj[objname].style.height = "1px";
	}

	obj[objname].style.display = "block";
	startTime[objname] = (new Date()).getTime();
	endHeight[objname] = obj[objname].scrollHeight;

	timerID[objname] = setInterval('slidetick(\'' + objname + '\');',timerlen);
}



function slidetick(objname){
  var elapsed = (new Date()).getTime() - startTime[objname];
 
  if (elapsed > slideAniLen)
    endSlide(objname)
  else {
    var d =Math.round(elapsed / slideAniLen * endHeight[objname]);
    if(dir[objname] == "up")
      d = endHeight[objname] - d;
 
    obj[objname].style.height = d + "px";
  }
 
  return;
}

function endSlide(objname){
  clearInterval(timerID[objname]);
 
  if(dir[objname] == "up")
    obj[objname].style.display = "none";
 
  obj[objname].style.height = endHeight[objname] + "px";
 
  delete(moving[objname]);
  delete(timerID[objname]);
  delete(startTime[objname]);
  delete(endHeight[objname]);
  delete(obj[objname]);
  delete(dir[objname]);
 
  return;
}

function toggleSlide(objname){
  if(document.getElementById(objname).style.display == "none"){
    // div is hidden, so let's slide down
    slidedown(objname);
  }else{
    // div is not hidden, so slide up
    slideup(objname);
  }
}

function toggleSlideButton(objname){
  if(document.getElementById(objname).style.display == "none"){
    // div is hidden, so let's slide down
    slidedown(objname);
    document.getElementById(objname + '_button').src='/images/bullet_toggle_minus.png';
  }else{
    // div is not hidden, so slide up
    slideup(objname);
    document.getElementById(objname + '_button').src='/images/bullet_toggle_plus.png';
  }
}

// no sliding
function toggleBlock(whichEl){
    if (document.getElementById(whichEl)) 
	    document.getElementById(whichEl).style.display = (document.getElementById(whichEl).style.display == "none" ) ? "block" : "none";
}

// no sliding
function hideBlock(whichEl){
    if (document.getElementById(whichEl)) 
		document.getElementById(whichEl).style.display = "none";
}

// no sliding
function showBlock(whichEl){
	if (document.getElementById(whichEl))
		document.getElementById(whichEl).style.display = "block";
}

  function toggleBlockButton(objname) {
  	if (document.getElementById(objname).style.display == "none") {
  		// div is hidden, so let's slide down
  		showBlock(objname);
  		document.getElementById(objname + '_button').src = '/images/bullet_toggle_minus.png';
  	} else {
  		// div is not hidden, so slide up
  		hideBlock(objname);
  		document.getElementById(objname + '_button').src = '/images/bullet_toggle_plus.png';
  	}
  }