// JavaScript Document
var centro = screen.width / 3.2;


var floatingMenuId = 'erro';
var floatingMenu =   
{   
    targetX: centro,   
    targetY: 15,   
  
    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.left = floatingMenu.nextX;
        floatingMenu.menu.top = floatingMenu.nextY;
    }else{
        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){   
        if (floatingMenu.hasElement && floatingMenu.hasInner){   
            // Handle Opera 8 problems
            floatingMenu.shiftX += de.clientWidth > window.innerWidth ? window.innerWidth : de.clientWidth
        }else{
			floatingMenu.shiftX += floatingMenu.hasElement ? de.clientWidth : floatingMenu.hasInner ? window.innerWidth : 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   
                ? document.documentElement.clientHeight   
                : floatingMenu.hasInner   
                  ? window.innerHeight   
                  : document.body.clientHeight;   
        }   
    }   
}   
  
floatingMenu.doFloat = function()   
{   
    var stepX, stepY;   
  
    floatingMenu.computeShifts();   
  
    stepX = (floatingMenu.shiftX + floatingMenu.targetX - floatingMenu.nextX) * .07;   
    if (Math.abs(stepX) < .5)   
    {   
        stepX = floatingMenu.shiftX +   
            floatingMenu.targetX - floatingMenu.nextX;   
    }   
  
    stepY = (floatingMenu.shiftY +    
        floatingMenu.targetY - floatingMenu.nextY) * .07;   
    if (Math.abs(stepY) < .5)   
    {   
        stepY = floatingMenu.shiftY +    
            floatingMenu.targetY - floatingMenu.nextY;   
    }   
  
    if (Math.abs(stepX) > 0 ||   
        Math.abs(stepY) > 0)   
    {   
        floatingMenu.nextX += stepX;   
        floatingMenu.nextY += stepY;   
        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.nextX = floatingMenu.shiftX + floatingMenu.targetX;
    floatingMenu.nextY = floatingMenu.shiftY + floatingMenu.targetY;
    floatingMenu.move();
}
  
if (document.layers)   
    floatingMenu.addEvent(window, 'onload', floatingMenu.init);   
else{   
    floatingMenu.init();   
    floatingMenu.addEvent(window, 'onload', floatingMenu.initSecondary);
}