rem: var url = xml.documentElement.getElementsByTagName('tilesurl'); 
add: var url = xml.getElementsByTagName('tilesurl'); 
context: 	"parseTilelayerXML": function(tl, xml){		// assign map type values data array						var id = xml.documentElement.getElementsByTagName('tilelayer_id');					tl.tilelayer_id = parseInt( id[0].firstChild.nodeValue );		var nm = xml.documentElement.getElementsByTagName('tiles_name');					tl.tiles_name = nm[0].firstChild.nodeValue;		var minz = xml.documentElement.getElementsByTagName('tiles_minzoom');		tl.tiles_minzoom = parseInt( minz[0].firstChild.nodeValue );		var mz = xml.documentElement.getElementsByTagName('tiles_maxzoom');		tl.tiles_maxzoom = parseInt( mz[0].firstChild.nodeValue );				var png = xml.documentElement.getElementsByTagName('ispng');		tl.ispng = png[0].firstChild.nodeValue;		var url = xml.documentElement.getElementsByTagName('tilesurl');		tl.tilesurl = url[0].firstChild.nodeValue;		var op = xml.documentElement.getElementsByTagName('opacity');		tl.opacity = parseFloat( op[0].firstChild.nodeValue );	},
meta: 1713	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1713/abb148cb64f85492613e3474ce4942a26489ad33/Edit.js/buggy/templates/Edit.js