rem: cursor._column=undefined; 
context: 	_releaseColumns: function() {		var columns=this._columns;		for(var i=0;i<columns.length;i++) {			var column=columns[i];						var head=column._head;			if (head) {				column._head=undefined;				head._column=undefined;				head.onmouseout=null;				head.onmouseover=null;				head.onmousedown=null;				head.onmouseup=null;								f_core.VerifyProperties(head);							}			var cursor=column._cursor;			if (cursor) {				column._cursor=undefined;				cursor.onmousedown=null;				cursor.onclick=null;				cursor._column=undefined;								f_core.VerifyProperties(cursor);			}						var col=column._col;			if (col) {				column._col=undefined;				f_core.VerifyProperties(col);			}						column._tcol=undefined;			column._tcell=undefined;			column._box=undefined;			column._label=undefined;			column._index=undefined;			column._sorter=undefined;			column._dataGrid=undefined;			column._id=undefined;			column._method=undefined;			column._visibility=undefined;			column._cellStyle=undefined;			column._autoFilter=undefined;						f_core.VerifyProperties(column);		}	},
meta: 4326	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4326/1f1850be471d4b8bfd2f3c50aa61bc39bf91259a/f_dataGrid.js/buggy/org.rcfaces.renderkit.html/src/org/rcfaces/renderkit/html/internal/javascript/f_dataGrid.js