/* Script by: www.jtricks.com
 * Version: 20060303
 * Latest version:
 * www.jtricks.com/javascript/navigation/floating.html
 */
var target_x = 0;
var target_y = 180;

var has_inner = typeof(window.innerWidth) == 'number';
var has_element = document.documentElement && document.documentElement.clientWidth;

var fm_id='floatdiv';
var floating_menu =
	document.getElementById
	? document.getElementById(fm_id)
	: document.all
	  ? document.all[fm_id]
	  : document.layers[fm_id];

var fm_shift_x, fm_shift_y, fm_next_x, fm_next_y;

function move_menu()
{
	if (document.layers)
	{
		floating_menu.left = fm_next_x;
		floating_menu.top = fm_next_y;
	}
	else
	{
		floating_menu.style.left = fm_next_x + 'px';
		floating_menu.style.top = fm_next_y + 'px';
	}
}

function compute_shifts()
{
	fm_shift_x = has_inner
		? pageXOffset
		: has_element
		  ? document.documentElement.scrollLeft
		  : document.body.scrollLeft;
	if (target_x < 0)
		fm_shift_x += has_inner
			? window.innerWidth
			: has_element
			  ? document.documentElement.clientWidth
			  : document.body.clientWidth;

	fm_shift_y = has_inner
		? pageYOffset
		: has_element
		  ? document.documentElement.scrollTop
		  : document.body.scrollTop;
	if (target_y < 0)
		fm_shift_y += has_inner
			? window.innerHeight
			: has_element
			  ? document.documentElement.clientHeight
			  : document.body.clientHeight;
}

function float_menu()
{
	var step_x, step_y;

	compute_shifts();

	step_x = (fm_shift_x + target_x - fm_next_x) * .07;
	if (Math.abs(step_x) < .5)
		step_x = fm_shift_x + target_x - fm_next_x;

	step_y = (fm_shift_y + target_y - fm_next_y) * .07;
	if (Math.abs(step_y) < .5)
		step_y = fm_shift_y + target_y - fm_next_y;

	if (Math.abs(step_x) > 0 ||
		Math.abs(step_y) > 0)
	{
		fm_next_x += step_x;
		fm_next_y += step_y;
		move_menu();
	}

	setTimeout('float_menu()', 20);
};

compute_shifts();
if (document.layers)
{
	// Netscape 4 cannot perform init move
	// when the page loads.
	fm_next_x = 0;
	fm_next_y = 0;
}
else
{
	fm_next_x = fm_shift_x + target_x;
	fm_next_y = fm_shift_y + target_y;
	move_menu();
}
float_menu();