Using the drag-and-drop plugin, Opera (9.1, on Linux/OSX) throws an error.

Issue reported here:

http://code.google.com/p/chess-diagra-matic/issues/detail?id=1

And the error:

JavaScript - http://www.64funsolutions.ca/chessdiagram/

Event thread: mousemove

Error:

name: TypeError

message: Statement on line 1: Object cannot be converted to primitive value

Backtrace:

Line 1 of eval script

return ! ! fn && typeof fn != "string" && typeof fn[0] ==

"undefined" && /function/i.test(fn + "");

Line 1 of eval script

if (window == this)

a = a || document;

if (jQuery.isFunction(a))

if (typeof a == "string")

return this.setArray(a.constructor == Array && a || (a.jquery ||

a.length && a != window && ! a.nodeType && a[0] != undefined &&

a[0].nodeType) && jQuery.makeArray(a) || [a]);

Line 1 of eval script

if (window == this)

a = a || document;

if (jQuery.isFunction(a))

if (typeof a == "string")

return this.setArray(a.constructor == Array && a || (a.jquery ||

a.length && a != window && ! a.nodeType && a[0] != undefined &&

a[0].nodeType) && jQuery.makeArray(a) || [a]);

Line 1 of eval script

elm = jQuery.iDrag.dragged;

elm.dragCfg.init = true;

dEs = elm.style;

elm.dragCfg.oD = jQuery.css(elm, "display");

elm.dragCfg.oP = jQuery.css(elm, "position");

if (! elm.dragCfg.initialPosition)

elm.dragCfg.oR = {x : parseInt(jQuery.css(elm, "left")) || 0, y :

parseInt(jQuery.css(elm, "top")) || 0};

elm.dragCfg.diffX = 0;

elm.dragCfg.diffY = 0;

if (jQuery.browser.msie)

elm.dragCfg.oC = jQuery.extend(jQuery.iUtil.getPosition(elm),

jQuery.iUtil.getSize(elm));

if (elm.dragCfg.oP != "relative" && elm.dragCfg.oP != "absolute")

jQuery.iDrag.helper.empty();

clonedEl = elm.cloneNode(true);

jQuery.iUtil.purgeEvents(clonedEl);

jQuery(clonedEl).css({display : "block", left : "0px", top : "0px"});

clonedEl.style.marginTop = "0";

clonedEl.style.marginRight = "0";

clonedEl.style.marginBottom = "0";

clonedEl.style.marginLeft = "0";

jQuery.iDrag.helper.append(clonedEl);

if (elm.dragCfg.onStart)

dhs = (jQuery.iDrag.helper.get(0)).style;

if (elm.dragCfg.autoSize)

else

dhs.display = "block";

dhs.marginTop = "0px";

dhs.marginRight = "0px";

dhs.marginBottom = "0px";

dhs.marginLeft = "0px";

jQuery.extend(elm.dragCfg.oC, jQuery.iUtil.getSize(clonedEl));

if (elm.dragCfg.cursorAt)

elm.dragCfg.nx = elm.dragCfg.oR.x;

elm.dragCfg.ny = elm.dragCfg.oR.y;

if (elm.dragCfg.insideParent || elm.dragCfg.containment == "parent")

if (elm.dragCfg.containment)

if (elm.dragCfg.si)

dhs.left = elm.dragCfg.oC.x - elm.dragCfg.diffX + "px";

dhs.top = elm.dragCfg.oC.y - elm.dragCfg.diffY + "px";

dhs.width = elm.dragCfg.oC.wb + "px";

dhs.height = elm.dragCfg.oC.hb + "px";

jQuery.iDrag.dragged.dragCfg.prot = false;

if (elm.dragCfg.gx)

if (elm.dragCfg.zIndex != false)

if (elm.dragCfg.opacity)

if (jQuery.iDrop && jQuery.iDrop.count > 0)

if (elm.dragCfg.ghosting == false)

return false;

Line 1 of eval script

if (jQuery.iDrag.dragged == null || jQuery.iDrag.dragged.dragCfg.prot

true)

var dragged = jQuery.iDrag.dragged;

dragged.dragCfg.currentPointer = jQuery.iUtil.getPointer(e);

if (dragged.dragCfg.init == false)

dx = dragged.dragCfg.currentPointer.x - dragged.dragCfg.pointer.x;

dy = dragged.dragCfg.currentPointer.y - dragged.dragCfg.pointer.y;

for (i in dragged.dragCfg.onDragModifier)

dragged.dragCfg.nx = dragged.dragCfg.oC.x + dx - dragged.dragCfg.diffX;

dragged.dragCfg.ny = dragged.dragCfg.oC.y + dy - dragged.dragCfg.diffY;

if (dragged.dragCfg.si && (dragged.dragCfg.onSlide ||

dragged.dragCfg.onChange))

if (dragged.dragCfg.onDrag)

if (! dragged.dragCfg.axis || dragged.dragCfg.axis == "horizontally")

if (! dragged.dragCfg.axis || dragged.dragCfg.axis == "vertically")

if (jQuery.iDrop && jQuery.iDrop.count > 0)

return false;

Line 1 of eval script

if (typeof jQuery == "undefined" || jQuery.event.triggered)

event = jQuery.event.fix(event || window.event || {});

var returnValue;

var c = this.events[event.type];

var args = [].slice.call(arguments, 1);

args.unshift(event);

for (j in c)

if (jQuery.browser.msie)

return returnValue;

At unknown location

[statement source code not available]