/* 
jquery.event.drag.js ~ v1.4 ~ Copyright (c) 2008, Three Dub Media (http://threedubmedia.com)  
Liscensed under the MIT License ~ http://threedubmedia.googlecode.com/files/MIT-LICENSE.txt
*/
(function(H) { H.fn.drag = function(K, J, I) { if (J) { this.bind("dragstart", K) } if (I) { this.bind("dragend", I) } return !K ? this.trigger("drag") : this.bind("drag", J ? J : K) }; var D = H.event, B = D.special, F = B.drag = { not: ":input", distance: 0, which: 1, setup: function(I) { I = H.extend({ distance: F.distance, which: F.which, not: F.not }, I || {}); I.distance = G(I.distance); D.add(this, "mousedown", E, I) }, teardown: function() { D.remove(this, "mousedown", E); if (this === F.dragging) { F.dragging = F.proxy = null } C(this, true) } }; function E(K) { var J = this, I, L = K.data || {}; if (L.elem) { J = K.dragTarget = L.elem; K.dragProxy = F.proxy || J; K.cursorOffsetX = L.pageX - L.left; K.cursorOffsetY = L.pageY - L.top; K.offsetX = K.pageX - K.cursorOffsetX; K.offsetY = K.pageY - K.cursorOffsetY } else { if (F.dragging || (L.which > 0 && K.which != L.which) || H(K.target).is(L.not)) { return } } switch (K.type) { case "mousedown": H.extend(L, H(J).offset(), { elem: J, target: K.target, pageX: K.pageX, pageY: K.pageY }); D.add(document, "mousemove mouseup", E, L); C(J, false); return false; case !F.dragging && "mousemove": if (G(K.pageX - L.pageX) + G(K.pageY - L.pageY) < L.distance) { break } K.target = L.target; I = A(K, "dragstart", J); if (I !== false) { F.dragging = J; F.proxy = K.dragProxy = H(I || J)[0] } case "mousemove": if (F.dragging) { I = A(K, "drag", J); if (B.drop) { B.drop.allowed = (I !== false); B.drop.handler(K) } if (I !== false) { break } K.type = "mouseup" } case "mouseup": D.remove(document, "mousemove mouseup", E); if (F.dragging) { if (B.drop) { B.drop.handler(K) } A(K, "dragend", J) } C(J, true); F.dragging = F.proxy = L.elem = null; break } } function A(L, J, K) { L.type = J; var I = D.handle.call(K, L); return I === false ? false : I || L.result } function G(I) { return Math.pow(I, 2) } function C(J, I) { if (!J) { return } J.unselectable = I ? "off" : "on"; J.onselectstart = function() { return I }; if (document.selection && document.selection.empty) { document.selection.empty() } if (J.style) { J.style.MozUserSelect = I ? "" : "none" } } })(jQuery);