cells | NN 6 IE 4 DOM 1
A collection of all td elements contained within a single tr element. Collection members are sorted in source code order.
Object Model Reference
    document.getElementById("rowID").cells
Object-Specific Properties
length
Object-Specific Methods
item( ) | namedItem( ) | tags( ) | urns( )
Object-Specific Event Handler Properties
None.

length | NN 6 IE 4 DOM 1
| Read-only
Returns the number of elements in the collection.
Example
    var howMany = document.getElementById("myTable").rows[0].cells.length;
Value
Integer.

item( ) | NN 6 IE 4 DOM 1
item(index[, subindex]) item(index) |
Returns a single td object or collection of td objects corresponding to the element matching the index value (or, optionally in IE, the index and subindex values).
Parameters
index When the parameter is a zero-based integer, the returned value is a single element corresponding to the specified item in source code order (nested within the current element); when the parameter is a string (IE only), the returned value is a collection of elements whose id properties match that string. subindex In IE only, if you specify a string value for the first parameter, you can use the second parameter to specify a zero-based index that retrieves the specified element from the collection whose id properties match the first parameter's string value.
Returned Value
One td object or collection (array) of td objects. If there are no matches to the parameters, the returned value is null.

namedItem( ) | NN 6 IE 6 DOM 1
namedItem("ID") |
Returns a single td object or collection of td objects corresponding to the element matching the parameter string value.
Parameters
ID The string that contains the same value as the desired element's id attribute.
Returned Value
One td object or collection (array) of td objects. If there are no matches to the parameters, the returned value is null.

tags( ) | NN n/a IE 4 DOM n/a
tags("tagName") |
Returns a collection of objects (among all objects nested within the current collection) whose tags match the tagName parameter. Implemented in all IE collections (see the all.tags( ) method), but redundant for collections of the same element type.

urns( ) | NN n/a IE 5(Win) DOM n/a
urns(URN) |
See the all.urns( ) method.