var floatingMenuId = 'floatdiv';   
var floatingMenu =   
{     
    targetYMin: 580,   
    targetYIni: 80,  
  
    hasInner: typeof(window.innerWidth) == 'number',   
    hasElement: document.documentElement   
        && document.documentElement.clientWidth,   
  
    menu:   
        document.getElementById   
        ? document.getElementById(floatingMenuId)   
        : document.all   
          ? document.all[floatingMenuId]   
          : document.layers[floatingMenuId]   
};   
  
floatingMenu.move = function ()   
{   
    if (document.layers)   
    {   
        floatingMenu.menu.top = floatingMenu.nextY;   
    }   
    else  
    {   
        floatingMenu.menu.style.top = floatingMenu.nextY + 'px';   
    }   
}   
  
floatingMenu.computeShifts = function ()   
{   
    var de = document.documentElement;   
 

    floatingMenu.shiftY =    
        floatingMenu.hasInner   
        ? pageYOffset   
        : floatingMenu.hasElement   
          ? de.scrollTop   
          : document.body.scrollTop;   
    if (floatingMenu.targetYIni < 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   
                ? document.documentElement.clientHeight   
                : floatingMenu.hasInner   
                  ? window.innerHeight   
                  : document.body.clientHeight;   
        }   
    } 
    
}   
  
floatingMenu.doFloat = function()   
{   

if (document.body.scrollTop>floatingMenu.targetYMin)
{ 
    var stepY;   
  
    floatingMenu.computeShifts();   
  
    
  
    stepY = (floatingMenu.shiftY +    
        floatingMenu.targetYIni - floatingMenu.nextY) * .17;   
    if (Math.abs(stepY) < .5)   
    {   
        stepY = floatingMenu.shiftY +    
            floatingMenu.targetYIni - floatingMenu.nextY;   
    }   
  
    if (Math.abs(stepY) > 0)   
    {   
         
        floatingMenu.nextY += stepY;   
        floatingMenu.move();   
    }   
    
}  else {

        floatingMenu.nextY = floatingMenu.targetYMin;   
        floatingMenu.move();   


}
    
    setTimeout('floatingMenu.doFloat()', 20);   
};   
  
  
  
  
  
// 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();   
};   
  
// Some browsers init scrollbars only after   
// full document load.   
floatingMenu.initSecondary = function()   
{   
    floatingMenu.computeShifts();   
    floatingMenu.nextY = floatingMenu.shiftY + floatingMenu.targetYMin;   
    floatingMenu.move();   
}   
  
if (document.layers)   
    floatingMenu.addEvent(window, 'onload', floatingMenu.init);   
else  
{   
    floatingMenu.init();   
    floatingMenu.addEvent(window, 'onload', floatingMenu.initSecondary);   
}