var x;
var y;
var element;
var being_dragged = false;
var offsetX = 0;
var offsetY = 0;

function mouser(event)
{
	x = event.clientX - offsetX;
	y = event.clientY - offsetY;
	
	if (being_dragged == true) 
	{
		document.getElementById(element).style.pixelLeft = x;
		document.getElementById(element).style.pixelTop = y;
	}
}

function mouse_down(ele_name) 
{
	being_dragged = true;
	document.onmousemove = mouser;
	element = ele_name;
	document.getElementById(element).style.cursor = 'move';
	
	offsetX = document.body.scrollLeft;
	offsetY = document.body.scrollTop;
}

function mouse_up() 
{
	being_dragged = false;
	document.onmousemove = null;
}

function hideObject(id) 
{
   document.getElementById(id).style.visibility = "hidden";
}

// Show/Hide functions for pointer objects

function showObject(id) 
{
   document.getElementById(id).style.visibility = "visible";
}