/******************************

Draggable Window: JS+CSS

JS designed by
Rogério Alencar Lino Filho
email: rogeriolino@gmail.com
http://rogeriolino.wordpress.com/

******************************/
var x, y, offsetX, offsetY;
//var id = "janela";
var id_mover = "CursoFide";
var drag = false;
var offset = false;
//
function selecao(target, act){
	if (!act) {
		if (typeof target.onselectstart != "undefined") //IE route
			target.onselectstart = function() { return false; }
		else if (typeof target.style.MozUserSelect != "undefined") //Firefox route
			target.style.MozUserSelect = "none";
		else //All other route (ie: Opera)
			target.onmousedown = function() { return false; }
	} else {
		if (typeof target.onselectstart != "undefined") //IE route
			target.onselectstart = function() { return true; }
		else if (typeof target.style.MozUserSelect != "undefined") //Firefox route
			target.style.MozUserSelect = "none";
		else //All other route (ie: Opera)
			target.onmousedown = function() { return true; }
	}
}
//
function findPos(obj) {
	var left = 0;
	var top = 0;
	if (obj.offsetParent) {
		left = obj.offsetLeft;
		top = obj.offsetTop;
		while (obj = obj.offsetParent) {
			left += obj.offsetLeft;
			top += obj.offsetTop;
		}
	}
	offsetX = left;
	offsetY = top;
}
//
function pos(event) {
	if (document.all) {
		x = window.event.clientX;
		y = window.event.clientY;
	} else {
		x = event.pageX;
		y = event.pageY;
	}
	if (!offset) {
		findPos(document.getElementById(id_mover));
		offsetX = x - offsetX;
		offsetY = y - offsetY;
	}
	if (id_mover) { var alvo = document.getElementById(id_mover); }
	document.getElementById("pos").innerHTML = "x: "+x+"<br />y: "+y+"<br />offsetX: "+offsetX+"<br />offsetY: "+offsetY;
	var body = document.getElementsByTagName("body").item(0);
	if (drag) {
		alvo.style.top = (y-offsetY)+"px";
		alvo.style.left = (x-offsetX)+"px";
		alvo.style.cursor = "move";
		alvo.style.opacity = 0.7;
		alvo.style.filter = "alpha(opacity=70)";
		selecao(body, false);
	} else {
		alvo.style.cursor = "default";
		alvo.style.opacity = 1;
		alvo.style.filter = "alpha(opacity=100)";
		selecao(body, true);
	}
}
//
function startDrag() { drag = true; offset = true; }
function stopDrag() { drag = false; offset = false; }
//
document.onmousemove = function(event) { pos(event); }
//