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Issues with serializing a tree

This question is in continuation with the one I asked a couple of days back. The link for the previous question is below.
index.php?s=normal&q=2260&a=2847

I created a dynamic tree and I have added certain attributes to each node. Now when I try to serialize the tree it does not pick those attributes. It only picks the img and the color. How can I get the my attributes in the serialized xml string. I figured out that I have to make some changes in dhtmlxtree_xw.js , but I am not able to put the correct code.


Also I am noticing a strange behavior, sometimes when I try to save the tree (as in serialize) it gives the following exception.

uncaught exception: [Exception... "Component returned failure code: 0x80004003 (NS_ERROR_INVALID_POINTER) [nsIDOMSerializer.serializeToString]"  nsresult: "0x80004003 (NS_ERROR_INVALID_POINTER)"  location: "JS frame :: http://localhost:8080/RoadToData/web/js/dhtmlxtree_xw.js :: anonymous :: line 9"  data: no]

And when I try to play around, like expand, collapse or delete some node and again press Save, it starts working. What can be the issue..?

Thanks.

>> but I am not able to put the correct code.

In case if you modified tree code in the way mentioned in original topic, you can modify serialization as

dhtmlxtree_xw.js , linen 108+ , code in bold need|may be added

out='<item id="'+itemNode.id+'" '+(this._getOpenState(itemNode)==1?' custom1="'+this.itemNode.attrs.custom1+'" open="1" '

>>I try to save the tree (as in serialize) it gives the following exception
This is caused by problem with serialization of not-parsed XML branches ( most probably you are using smart xml parsing mode )
Please contact us directly at support@dhtmlx.com - we will provide latest version of js file, which must resolve issue.