// Copyright (C) 2005-2008 Ilya S. Lyubinskiy. All rights reserved.

// Technical support: http://www.php-development.ru/

//

// YOU MAY NOT

// (1) Remove or modify this copyright notice.

// (2) Re-distribute this code or any part of it.

//     Instead, you may link to the homepage of this code:

//     http://www.php-development.ru/javascripts/dropdown.php

//

// YOU MAY

// (1) Use this code on your website.

// (2) Use this code as part of another product.

//

// NO WARRANTY

// This code is provided "as is" without warranty of any kind.

// You expressly acknowledge and agree that use of this code is at your own risk.





// ***** Popup Control *********************************************************



// ***** at_show_aux *****



function at_show_aux(parent, child)

{

  var p = document.getElementById(parent);

  var c = document.getElementById(child );



  var top  = (c["at_position"] == "y") ? p.offsetHeight+2 : 0;

  var left = (c["at_position"] == "x") ? p.offsetWidth +2 : 0;



  for (; p; p = p.offsetParent)

  {

    top  += p.offsetTop;

    left += p.offsetLeft;

  }



  c.style.position   = "absolute";

  c.style.top        = top +'px';

  c.style.left       = left+'px';

  c.style.visibility = "visible";

}



// ***** at_show *****



function at_show()

{

  var p = document.getElementById(this["at_parent"]);

  var c = document.getElementById(this["at_child" ]);



  at_show_aux(p.id, c.id);

  clearTimeout(c["at_timeout"]);

}



// ***** at_hide *****



function at_hide()

{

  var p = document.getElementById(this["at_parent"]);

  var c = document.getElementById(this["at_child" ]);



  c["at_timeout"] = setTimeout("document.getElementById('"+c.id+"').style.visibility = 'hidden'");
  

}

function makearray(n) {
    this.length = n;
    for(var i = 1; i <= n; i++)
        this[i] = 0;
    return this;
}

hexa = new makearray(16);
for(var i = 0; i < 10; i++)
    hexa[i] = i;
hexa[10]="a"; hexa[11]="b"; hexa[12]="c";
hexa[13]="d"; hexa[14]="e"; hexa[15]="f";

function hex(i) {
    if (i < 0)
        return "00";
    else if (i > 255)
        return "ff";
    else
        return "" + hexa[Math.floor(i/16)] + hexa[i%16];
}

function setbgColor(r, g, b) {
    var hr = hex(r); var hg = hex(g); var hb = hex(b);
    document.bgColor = "#"+hr+hg+hb;
}

function fade(sr, sg, sb, er, eg, eb, step) {
    for(var i = 0; i <= step; i++) {
        setbgColor(
        Math.floor(sr * ((step-i)/step) + er * (i/step)),
        Math.floor(sg * ((step-i)/step) + eg * (i/step)),
        Math.floor(sb * ((step-i)/step) + eb * (i/step)));
    }
}

/* Usage:
 *   fade(inr,ing,inb, outr,outg,outb, step);
 * example.
 *   fade(0,0,0, 255,255,255, 255);
 * fade from black to white with very slow speed.
 *   fade(255,0,0, 0,0,255, 50);
 *   fade(0xff,0x00,0x00, 0x00,0x00,0xff, 50); // same as above
 * fade from red to blue with fast speed.
 * step 2 is very fast and step 255 is very slow.
 */

function fadein() {
    fade(255,255,255, 0,0,0, 64);
}

function fadeout() {
    /*fade(0,0,0, 255,255,255, 64); */
}

/* do fadein */
fadein();


// ***** at_click *****



function at_click()

{

  var p = document.getElementById(this["at_parent"]);

  var c = document.getElementById(this["at_child" ]);



  if (c.style.visibility != "visible") at_show_aux(p.id, c.id); else c.style.visibility = "hidden";

  return false;

}



// ***** at_attach *****



// PARAMETERS:

// parent   - id of the parent html element

// child    - id of the child  html element that should be droped down

// showtype - "click" = drop down child html element on mouse click

//            "hover" = drop down child html element on mouse over

// position - "x" = display the child html element to the right

//            "y" = display the child html element below

// cursor   - omit to use default cursor or specify CSS cursor name



function at_attach(parent, child, showtype, position, cursor)

{

  var p = document.getElementById(parent);

  var c = document.getElementById(child);



  p["at_parent"]     = p.id;

  c["at_parent"]     = p.id;

  p["at_child"]      = c.id;

  c["at_child"]      = c.id;

  p["at_position"]   = position;

  c["at_position"]   = position;



  c.style.position   = "absolute";

  c.style.visibility = "hidden";



  if (cursor != undefined) p.style.cursor = cursor;



  switch (showtype)

  {

    case "click":

      p.onclick     = at_click;

      p.onmouseout  = at_hide;

      c.onmouseover = at_show;

      c.onmouseout  = at_hide;

      break;

    case "hover":

      p.onmouseover = at_show;

      p.onmouseout  = at_hide;

      c.onmouseover = at_show;

      c.onmouseout  = at_hide;

      break;

  }

}