function HelpHover()
{
        this._mousePosX = 0;
        this._mousePosY = 0;
        this._hoverItem = null;
        this._hoverContents = null;
}

HelpHover.prototype.init = function()
{
        var hh = this;
        var helpItems = document.getElementsByClassName('hasHelp');
        for (var i=0; i<helpItems.length; i++)
        {
                helpItems[i].onmousemove = function(e)
                {
                        if (!e) var e = window.event;
                        if (e.pageX || e.pageY)
                        {
                                hh.mousePosX = e.pageX;
                                hh.mousePosY = e.pageY;
                        }
                        else if (e.clientX || e.clientY)
                        {
                                hh.mousePosX = e.clientX + document.body.scrollLeft;
                                hh.mousePosY = e.clientY + document.body.scrollTop;
                        }
                        hh._hoverItem = this;
                        hh._hoverContents = document.getElementById(this.id+'Help');
                        hh.move();
                }
                helpItems[i].onmouseout = function (e)
                {
                        hh.out();
                }
        }
}

HelpHover.prototype.out = function()
{
        this._hoverContents.style.top = -10000+'px';
        this._hoverContents.style.left = -10000+'px';
        this._hoverItem = null;
        this._hoverContents = null;
}

HelpHover.prototype.move = function()
{
        this._hoverContents.style.top = this.mousePosY+10+'px';
        this._hoverContents.style.left = this.mousePosX+10+'px';
}

addEvent(window, 'load', function()
{
        var hh = new HelpHover();
        hh.init();
});