/* Script by: www.jtricks.com
 * Version: 20071017
 * Latest version:
 * www.jtricks.com/javascript/navigation/floating.html
 */
var floatingMenuId = 'floatdiv';
var floatingMenu =
{
    targetX: -410,
    targetY: -410,

    hasInner: typeof(window.innerWidth) == 'number',
    hasElement: typeof(document.documentElement) == 'object'
        && typeof(document.documentElement.clientWidth) == 'number',

    menu:
        document.getElementById
        ? document.getElementById(floatingMenuId)
        : document.all
          ? document.all[floatingMenuId]
          : document.layers[floatingMenuId]
}

floatingMenu.move = function ()
{
    floatingMenu.menu.style.left = floatingMenu.nextX + 'px';
    floatingMenu.menu.style.top = floatingMenu.nextY + 'px';
}

floatingMenu.computeShifts = function ()
{
    var de = document.documentElement;

    floatingMenu.shiftX =  
        floatingMenu.hasInner  
        ? pageXOffset  
        : floatingMenu.hasElement  
          ? de.scrollLeft  
          : document.body.scrollLeft;  
    if (floatingMenu.targetX < 0)
    {
        floatingMenu.shiftX +=
            floatingMenu.hasElement
            ? de.clientWidth
            : document.body.clientWidth;
    }

    floatingMenu.shiftY = 
        floatingMenu.hasInner
        ? pageYOffset
        : floatingMenu.hasElement
          ? de.scrollTop
          : document.body.scrollTop;
    if (floatingMenu.targetY < 0)
    {
        if (floatingMenu.hasElement && floatingMenu.hasInner)
        {
            // Handle Opera 8 problems
            floatingMenu.shiftY +=
                de.clientHeight > window.innerHeight
                ? window.innerHeight
                : de.clientHeight
        }
        else
        {
            floatingMenu.shiftY +=
                floatingMenu.hasElement
                ? de.clientHeight
                : document.body.clientHeight;
        }
    }
}

floatingMenu.computeShiftsFirst = function ()
{
	floatingMenu.shiftX = -500;
	floatingMenu.shiftY = 808;
}

floatingMenu.calculateCornerX = function()
{
    if (floatingMenu.targetX != 'center')
        return floatingMenu.shiftX + floatingMenu.targetX;

    var width = parseInt(floatingMenu.menu.offsetWidth);

    var cornerX =
        floatingMenu.hasElement
        ? (floatingMenu.hasInner
           ? pageXOffset
           : document.documentElement.scrollLeft) + 
          (document.documentElement.clientWidth - width)/2
        : document.body.scrollLeft + 
          (document.body.clientWidth - width)/2;
    return cornerX;
}

floatingMenu.calculateCornerY = function()
{
    if (floatingMenu.targetY != 'center')
        return floatingMenu.shiftY + floatingMenu.targetY;

    var height = parseInt(floatingMenu.menu.offsetHeight);

    // Handle Opera 8 problems
    var clientHeight = 
        floatingMenu.hasElement && floatingMenu.hasInner
        && document.documentElement.clientHeight 
            > window.innerHeight
        ? window.innerHeight
        : document.documentElement.clientHeight

    var cornerY =
        floatingMenu.hasElement
        ? (floatingMenu.hasInner  
           ? pageYOffset
           : document.documentElement.scrollTop) + 
          (clientHeight - height)/2
        : document.body.scrollTop + 
          (document.body.clientHeight - height)/2;
    return cornerY;
}

floatingMenu.doFloat = function()
{
    var stepX, stepY;
    floatingMenu.computeShifts();
    var cornerX = floatingMenu.calculateCornerX();
    var stepX = (cornerX - floatingMenu.nextX) * .03;
    if (Math.abs(stepX) < .1)
    {stepX = cornerX - floatingMenu.nextX;}
    var cornerY = floatingMenu.calculateCornerY();
    var stepY = (cornerY - floatingMenu.nextY) * .03;
    if (Math.abs(stepY) < .1)
    {stepY = cornerY - floatingMenu.nextY;}
    if (Math.abs(stepX) > 0 ||
        Math.abs(stepY) > 0)
    {   floatingMenu.nextX += stepX;
        floatingMenu.nextY += stepY;
        floatingMenu.move();
    }
    setTimeout('floatingMenu.doFloat()', 10);
}

// addEvent designed by Aaron Moore
floatingMenu.addEvent = function(element, listener, handler)
{
    if(typeof element[listener] != 'function' || 
       typeof element[listener + '_num'] == 'undefined')
    {
        element[listener + '_num'] = 0;
        if (typeof element[listener] == 'function')
        {
            element[listener + 0] = element[listener];
            element[listener + '_num']++;
        }
        element[listener] = function(e)
        {
            var r = true;
            e = (e) ? e : window.event;
            for(var i = element[listener + '_num'] -1; i >= 0; i--)
            {
                if(element[listener + i](e) == false)
                    r = false;
            }
            return r;
        }
    }

    //if handler is not already stored, assign it
    for(var i = 0; i < element[listener + '_num']; i++)
        if(element[listener + i] == handler)
            return;
    element[listener + element[listener + '_num']] = handler;
    element[listener + '_num']++;
}

floatingMenu.init = function()
{
    floatingMenu.initSecondary();
    floatingMenu.doFloat();
}

floatingMenu.init0 = function()
{
    floatingMenu.initSecondary0();
    floatingMenu.doFloat();
}

// Some browsers init scrollbars only after
// full document load.
floatingMenu.initSecondary = function()
{
    floatingMenu.computeShifts();
    floatingMenu.nextX = floatingMenu.calculateCornerX();
    floatingMenu.nextY = floatingMenu.calculateCornerY();
    floatingMenu.move();
}

floatingMenu.initSecondary0 = function()
{
    floatingMenu.computeShiftsFirst();
    floatingMenu.nextX = floatingMenu.calculateCornerX();
    floatingMenu.nextY = floatingMenu.calculateCornerY();
    floatingMenu.move();
}

if (document.layers)
    floatingMenu.addEvent(window, 'onload', floatingMenu.init0);
else
{
    floatingMenu.init0();
    floatingMenu.addEvent(window, 'onload', floatingMenu.initSecondary0);
}

/**************************************************
 * dom-drag.js
 * 09.25.2001
 * www.youngpup.net
 * Script featured on Dynamic Drive (http://www.dynamicdrive.com) 12.08.2005
 **************************************************
 * 10.28.2001 - fixed minor bug where events
 * sometimes fired off the handle, not the root.
 **************************************************/

var Drag = {
	obj : null,
	init : function(o, oRoot, minX, maxX, minY, maxY, bSwapHorzRef, bSwapVertRef, fXMapper, fYMapper)
	{
		o.onmousedown	= Drag.start;
		o.hmode			= bSwapHorzRef ? false : true ;
		o.vmode			= bSwapVertRef ? false : true ;
		o.root = oRoot && oRoot != null ? oRoot : o ;
		if (o.hmode  && isNaN(parseInt(o.root.style.left  ))) o.root.style.left   = "0px";
		if (o.vmode  && isNaN(parseInt(o.root.style.top   ))) o.root.style.top    = "0px";
		if (!o.hmode && isNaN(parseInt(o.root.style.right ))) o.root.style.right  = "0px";
		if (!o.vmode && isNaN(parseInt(o.root.style.bottom))) o.root.style.bottom = "0px";
		o.minX	= typeof minX != 'undefined' ? minX : null;
		o.minY	= typeof minY != 'undefined' ? minY : null;
		o.maxX	= typeof maxX != 'undefined' ? maxX : null;
		o.maxY	= typeof maxY != 'undefined' ? maxY : null;
		o.xMapper = fXMapper ? fXMapper : null;
		o.yMapper = fYMapper ? fYMapper : null;
		o.root.onDragStart	= new Function();
		o.root.onDragEnd	= new Function();
		o.root.onDrag		= new Function();
	},
	start : function(e)
	{
		var o = Drag.obj = this;
		e = Drag.fixE(e);
		var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
		var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
		o.root.onDragStart(x, y);
		o.lastMouseX	= e.clientX;
		o.lastMouseY	= e.clientY;
		if (o.hmode) {
			if (o.minX != null)	o.minMouseX	= e.clientX - x + o.minX;
			if (o.maxX != null)	o.maxMouseX	= o.minMouseX + o.maxX - o.minX;
		} else {
			if (o.minX != null) o.maxMouseX = -o.minX + e.clientX + x;
			if (o.maxX != null) o.minMouseX = -o.maxX + e.clientX + x;
		}
		if (o.vmode) {
			if (o.minY != null)	o.minMouseY	= e.clientY - y + o.minY;
			if (o.maxY != null)	o.maxMouseY	= o.minMouseY + o.maxY - o.minY;
		} else {
			if (o.minY != null) o.maxMouseY = -o.minY + e.clientY + y;
			if (o.maxY != null) o.minMouseY = -o.maxY + e.clientY + y;
		}
		document.onmousemove	= Drag.drag;
		document.onmouseup		= Drag.end;
		return false;
	},
	drag : function(e)
	{
		e = Drag.fixE(e);
		var o = Drag.obj;
		var ey	= e.clientY;
		var ex	= e.clientX;
		var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
		var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
		var nx, ny;
		if (o.minX != null) ex = o.hmode ? Math.max(ex, o.minMouseX) : Math.min(ex, o.maxMouseX);
		if (o.maxX != null) ex = o.hmode ? Math.min(ex, o.maxMouseX) : Math.max(ex, o.minMouseX);
		if (o.minY != null) ey = o.vmode ? Math.max(ey, o.minMouseY) : Math.min(ey, o.maxMouseY);
		if (o.maxY != null) ey = o.vmode ? Math.min(ey, o.maxMouseY) : Math.max(ey, o.minMouseY);
		nx = x + ((ex - o.lastMouseX) * (o.hmode ? 1 : -1));
		ny = y + ((ey - o.lastMouseY) * (o.vmode ? 1 : -1));
		if (o.xMapper)		nx = o.xMapper(y)
		else if (o.yMapper)	ny = o.yMapper(x)
		Drag.obj.root.style[o.hmode ? "left" : "right"] = nx + "px";
		Drag.obj.root.style[o.vmode ? "top" : "bottom"] = ny + "px";
		Drag.obj.lastMouseX	= ex;
		Drag.obj.lastMouseY	= ey;
		Drag.obj.root.onDrag(nx, ny);
		return false;
	},
	end : function()
	{
		document.onmousemove = null;
		document.onmouseup   = null;
		Drag.obj.root.onDragEnd(	parseInt(Drag.obj.root.style[Drag.obj.hmode ? "left" : "right"]), 
									parseInt(Drag.obj.root.style[Drag.obj.vmode ? "top" : "bottom"]));
		Drag.obj = null;
	},
	fixE : function(e)
	{
		if (typeof e == 'undefined') e = window.event;
		if (typeof e.layerX == 'undefined') e.layerX = e.offsetX;
		if (typeof e.layerY == 'undefined') e.layerY = e.offsetY;
		return e;
	}
};