var NS4 = (document.layers) ? 1 : 0;
var IE4 = (document.all) ? 1 : 0;
var NS7 = (document.getElementById) ? 1 : 0;
function animation(id) {
  this.element = (NS4) ? document[id] : (NS7) ? document.getElementById(id).style : document.all[id].style;
  this.active = 0;
  this.timer = null;
  this.path = null;
  this.num = null;

  this.name = id + "Var";
  eval(this.name + " = this");

  this.animate = animate;
  this.step = step;
  this.show = show;
  this.hide = hide;
  this.left = left;
  this.top = top;
  this.moveTo = moveTo;
  this.slideBy = slideBy;
  this.slideTo = slideTo;
  this.circle = circle;
}

function pos(x, y) {
  this.x = Math.round(x);
  this.y = Math.round(y);
}

function show() {
  this.element.visibility = (NS4) ? "show" : "visible";
}

function hide() {
  this.element.visibility = (NS4) ? "hide" : "hidden";
}

function left() {
  return parseInt(this.element.left);
}

function top() {
  return parseInt(this.element.top);
}

function moveTo(x, y) {
  this.element.left = x;
  this.element.top = y;
}

function step() {
  this.moveTo(this.path[this.num].x, this.path[this.num].y);

  if (this.num >= this.path.length - 1) {
    clearInterval(this.timer);
    this.active = 0;
    if (this.statement)
      eval(this.statement);
  } else {
    this.num++;
  }
}

function animate(interval) {
  if (this.active) return;
  this.num = 0;
  this.active = 1;
  this.timer = setInterval(this.name + ".step()", interval);
}

function slideBy(dx, dy, steps, interval, statement) {
  var fx = this.left();
  var fy = this.top();
  var tx = fx + dx;
  var ty = fy + dy;
  this.slideTo(tx, ty, steps, interval, statement);
}

function slideTo(tx, ty, steps, interval, statement) {
  var fx = this.left();
  var fy = this.top();
  var dx = tx - fx;
  var dy = ty - fy;
  var sx = dx / steps;
  var sy = dy / steps;

  var ar = new Array();
  for (var i = 0; i < steps; i++) {
    fx += sx;
    fy += sy;
    ar[i] = new pos(fx, fy);
  }
  this.path = ar;

  this.statement = (statement) ? statement : null;
  this.animate(interval);
}

function circle(radius, angle0, angle1, steps, interval, statement) {
  var dangle = angle1 - angle0;
  var sangle = dangle / steps;
  var x = this.left();
  var y = this.top();
  var cx = x - radius * Math.cos(angle0 * Math.PI / 180);
  var cy = y + radius * Math.sin(angle0 * Math.PI / 180);

  var ar = new Array();
  for (var i = 0; i < steps; i++) {
    angle0 += sangle;
    x = cx + radius * Math.cos(angle0 * Math.PI / 180);
    y = cy - radius * Math.sin(angle0 * Math.PI / 180);
    ar[i] = new pos(x, y);
  }
  this.path = ar;

  this.statement = (statement) ? statement : null;
  this.animate(interval);
}
function showit(id) {
   show1 = new animation(id);
   if (show1.element) {show1.show();}
}
function hideit(id){
   show2 = new animation(id);
   if (show2.element) {show2.hide();}
}
function showblink() {
   blink1.show();
}
function hideblink(){
   blink1.hide();
}
function blink(id,onms,offms) {
   blink1 = new animation(id);
   blinkineck("red",onms,offms);
}
function blinkineck(on,onms,offms) {
  if (on == "red") {
    hideblink();
    on = "black";
  } else {
    showblink();
    on = "red";
  }
  if (on == "red") {
    var again = setTimeout("blinkineck('" + on + "','" + onms + "','" + offms + "')", onms );
  } else {
    var again = setTimeout("blinkineck('" + on + "','" + onms + "','" + offms + "')", offms );
  }
}
function MM_displayStatusMsg(msgStr)  { //v3.0
	status=msgStr; document.MM_returnValue = true;
}

function MM_findObj(n, d) { //v3.0
  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); return x;
}
/* Functions that swaps images. */
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 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;
}

/* Functions that swaps down images. */
function MM_nbGroup(event, grpName) { //v3.0
  var i,img,nbArr,args=MM_nbGroup.arguments;
  if (event == "init" && args.length > 2) {
    if ((img = MM_findObj(args[2])) != null && !img.MM_init) {
      img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
      nbArr[nbArr.length] = img;
      for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
        if (!img.MM_up) img.MM_up = img.src;
        img.src = img.MM_dn = args[i+1];
        nbArr[nbArr.length] = img;
    } }
  } else if (event == "over") {
    document.MM_nbOver = nbArr = new Array();
    for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = (img.MM_dn && args[i+2]) ? args[i+2] : args[i+1];
      nbArr[nbArr.length] = img;
    }
  } else if (event == "out" ) {
    for (i=0; i < document.MM_nbOver.length; i++) {
      img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; }
  } else if (event == "down") {
    if ((nbArr = document[grpName]) != null)
      for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }
    document[grpName] = nbArr = new Array();
    for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = img.MM_dn = args[i+1];
      nbArr[nbArr.length] = img;
  } }
}

/* Functions that handle preload. */
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];}}
}