function MousePosition()
{
    this.xScreenPosition = 0; // Horizontal position of the mouse on the screen
    this.yScreenPosition = 0; // Vertical position of the mouse on the screen
    
    this.getMouseOverPosition = function (event)
    {
        if (document.layers) 
        {
            // When the page scrolls in Netscape, the event's mouse position
            // reflects the absolute position on the screen. innerHight/Width
            // is the position from the top/left of the screen that the user is
            // looking at. pageX/YOffset is the amount that the user has
            // scrolled into the page. So the values will be in relation to
            // each other as the total offsets into the page, no matter if
            // the user has scrolled or not.
			this.xScreenPosition = event.pageX;
            this.yScreenPosition = event.pageY;			
        } else if (document.all)
        {
            // When the page scrolls in IE, the event's mouse position
            // reflects the position from the top/left of the screen the
            // user is looking at. scrollLeft/Top is the amount the user
            // has scrolled into the page. clientWidth/Height is the height/
            // width of the current page the user is looking at. So, to be
            // consistent with Netscape (above), add the scroll offsets to
            // both so we end up with an absolute value on the page, no
            // matter if the user has scrolled or not.
            this.xScreenPosition = window.event.x + document.body.scrollLeft;
            this.yScreenPosition = window.event.y + document.body.scrollTop;			
        } else if (document.getElementById)
        {
            // Netscape 6 behaves the same as Netscape 4 in this regard
            this.xScreenPosition = event.pageX;
            this.yScreenPosition = event.pageY;  			
        }

    }
	
	

}