//------- EzAction.JS ------ //

var xmin = 0
var ymin = 0
var xmax = 800
var ymax = 600
var snaps = 20
var tempo = 20   // milliseconds for steps

function move(ob,mx,my)
{
   var x = parseInt(ob.style.left)
   var y = parseInt(ob.style.top)
   x = (x + mx + (xmax-xmin))%(xmax-xmin) + xmin
   y = (y + my + (ymax-ymin))%(ymax-ymin) + ymin
   ob.style.left = x
   ob.style.top = y
}

function jump(ob,jx,jy)
{
   ob.style.left = jx
   ob.style.top = jy
}

function walkto(ob,ticks,x,y)
{
   walk(ob,[left(ob),top(ob),ticks,x,y])
}

function fade(ob,start,finish,ticks)
{  //=== only works on objects with an ID ===
   var steps = 0
   if (ticks)
   {
      steps = ticks
   }

   for (s=0; s<=steps; s++)
   {
     setTimeout( ob.id + ".style.filter='alpha(opacity="+Math.floor(start+(finish-start)*(s/steps))+")'", tempo*s )
   }
   
}

function walk(ob,path)
{  var s = new Array(left(ob),top(ob))
   path = s.concat(path)
   var p = 0
   var t = 0
   while (p+4 < path.length)
   {  for (s = 1; s <= path[p+2]; s++)
      {  var x = (path[p+3]-path[p])/path[p+2]*s + path[p];
         var y = (path[p+4]-path[p+1])/path[p+2]*s + path[p+1];
         setTimeout(ob.id + ".style.left = " + x + ";" + ob.id + ".style.top = " + y + ";"  , tempo*(s+t) )
      } 
      t = t + path[p+2];
      p = p + 3;
      
    }
}

function left(ob)
{
   return parseInt(ob.style.left)
}

function top(ob)
{
   return parseInt(ob.style.top)
}

function snap(ob,hori,vert)
{ var x = parseInt(ob.style.left) + hori/2;
  var y = parseInt(ob.style.top) + vert/2;
  ob.style.left = x - x % hori;
  ob.style.top = y - y % vert;
}

function distance(ob,px,py)
{
   return Math.pow( Math.pow(parseInt(ob.style.top)-py,2) + Math.pow(parseInt(ob.style.left)-px,2),0.5 )
}

function distance(obja,objb)
{
   return Math.pow( Math.pow(parseInt(obja.style.top)-parseInt(objb.style.top),2) 
                  + Math.pow(parseInt(obja.style.left)-parseInt(objb.style.left),2),0.5 )
}

function drag(ob,sx,sy)
{  DragDrop(ob,event) 
   if (!DragDrop.active)
   {
      if (sx && sy)
      {  snap(ob,sx,sy) }
      else
      {  snap(ob,snaps,snaps) }
      if (ob.ondrop ) { ob.ondrop() ;}
   }
   
}

function dragnear(ob,tx,ty,d)
{
   DragDrop(ob,event)
   if (!DragDrop.active)
   {  alert(distance(ob,tx,ty))
      if (distance(ob,tx,ty)<d)
      {    ob.style.left = tx
            ob.style.top = ty
      }
   }
}

function DragDrop(elementToDrag, event) {
  DragDrop.active = !DragDrop.active;
  if (DragDrop.active)
    { DragDrop.saveCursor = elementToDrag.style.cursor;
      DragDrop.saveBorder = elementToDrag.style.border;

      elementToDrag.style.border = "5px outset #ff66ff";
	  elementToDrag.style.borderStyle = "double";
	  elementToDrag.style.cursor = "pointer"; 
	       // auto | crosshair | default | pointer | move |
          // e-resize | ne-resize | nw-resize | n-resize | se-resize | sw-resize | s-resize | w-resize| text | wait | help | <url>

      elementToDrag.style.zIndex = 999;
	  elementToDrag.style.left = (parseInt(elementToDrag.style.left) - 5) + "px";
	  elementToDrag.style.top = (parseInt(elementToDrag.style.top) - 5) + "px";

	var deltaX = event.clientX - parseInt(elementToDrag.style.left);
    var deltaY = event.clientY - parseInt(elementToDrag.style.top);

    if (document.addEventListener) {
      document.addEventListener("mousemove", moveHandler, true);
	  document.addEventListener("mouseup", upHandler, true);
    }
    else if (document.attachEvent) {
	  document.attachEvent("onmousemove", moveHandler);
	  document.attachEvent("onmouseup", upHandler);
    }
    else {
	var oldmovehandler = document.onmousemove;
	var olduphandler = document.onmouseup;
	document.onmousemove = moveHandler;
	document.onmouseup = upHandler;
    }

    if (event.stopPropagation) event.stopPropagation();
    else event.cancelBubble = true;

    if (event.preventDefault) event.preventDefault();
    else event.returnValue = false;
   }
   else {elementToDrag.style.left = (parseInt(elementToDrag.style.left) + 5) + "px";
     	 elementToDrag.style.top = (parseInt(elementToDrag.style.top) + 5) + "px";

         elementToDrag.style.cursor = DragDrop.saveCursor;      //default cursor - e.g. arrow
         elementToDrag.style.border = DragDrop.saveBorder;           // DROP
         elementToDrag.style.zIndex = 100;   // needs more control - need a standard idea
        }                                    //  e.g. dragable > 100, fixed < 100

    function moveHandler(e) {
	if (!e) e = window.event;
	elementToDrag.style.left = (e.clientX - deltaX) + "px";
	elementToDrag.style.top = (e.clientY - deltaY) + "px";

	if (e.stopPropagation) e.stopPropagation();
	else e.cancelBubble = true;
    }

    function upHandler(e) {
	if (!e) e = window.event;
	if (document.removeEventListener) {
	    document.removeEventListener("mouseup", upHandler, true);
	    document.removeEventListener("mousemove", moveHandler, true);
	}
	else if (document.detachEvent) {
	    document.detachEvent("onmouseup", upHandler);
	    document.detachEvent("onmousemove", moveHandler);
	}
	else {
	    document.onmouseup = olduphandler;
	    document.onmousemove = oldmovehandler;
	}

	if (e.stopPropagation) e.stopPropagation();
	else e.cancelBubble = true;
      
    }
}

DragDrop.active = false;

function shade(ob,p)
{
   if (p>=0 && p<=100)
   { ob.style.filter="alpha(opacity="+p+")" }
}


function drop()
{ return !DragDrop.active; }

function hide(ob)
{ ob.style.visibility = "hidden" }

function show(ob)
{ ob.style.visibility = "visible" }

function position(ob,x,y)
{
  return ((parseInt(ob.style.left)==x) && (parseInt(ob.style.top)==y))
}

function near(obja,objb)
{
   if (distance(obja,objb)<snaps)
   { return true; }
   else
   { return false; }
}

//===== FixingText solves a bug in WebBuilder ======

var textalreadyfixed = false

function fixtext()
{ 
  for (x=0;x<document.all.length;x++)
  {
     if (!textalreadyfixed 
            && (document.all[x].tagName == "TEXT")
            && (document.all[x].parentElement.tagName == "DIV")
         )
     { 
        var obj = document.all[x]
        var par = obj.parentElement
        var t = obj.outerHTML

        for (p in obj)
        { if (t.indexOf(p)>=0)
          { if (p.substring(0,2)=="on")
            {  par[p] = new Function(obj[p]) 
               obj[p] = null
            }
            else
            {  par[p] = obj[p]
               obj[p] = null
            }
          }
        }

     }
     
  }
  textalreadyfixed = true
}


fixtext()