Note : The StyleSheets collection is Internet Explorer 4.0 specific. For properties of Style Sheets, see the StyleSheet Object topic.
The StyleSheets collection is an ordered, indexed (by order in the source) array, containing a reference to every Style Sheet object in the document. I.e. a collection of <LINK> and/or <STYLE> element.
StyleSheet Objects would normally be retrieved by their index in the StyleSheets collection (for example document.StyleSheets(1) contains a reference to the second stylesheet (which maybe from a <LINK> or <STYLE> element), but a string value can be used, as long as that string is a valid identifier (ID attribute value) for a stylesheet element in the document.
length
The length property returns the number of stylesheet objects in the collection. Note that the length count starts at 1, not 0 as the stylesheets collection index does. Therefore, the length property may return a value of 5, but to access the 3rd element, you'd need to use document.stylesheets(2).property
item
The item method retrieves single items, or sub-collections from the StyleSheets collection. It accepts the following arguments:
all.item(index, sub-index)
If index is a number, then the method returns a reference to the stylesheet object at that position in the stylesheets collections index.
If the index property is a string value, then the item method returns a sub-collection, containing a reference to every stylesheet in the document that has its ID or NAME attribute set to the string contained in the index argument. To retrieve certain stylesheet objects from this sub-collection, the sub-index argument must be used.