Flash CS4 Professional.
timeline.getGuidelines()
None.
An XML string.
Method: returns an XML string that represents the current positions of the horizontal and vertical guide lines for a timeline (View >Guides >Show Guides). To apply these guide lines to a timeline, use timeline.setGuidelines().
Assuming that you have some guide lines on the first timeline, the following example displays them as an XML string in the Output panel:
var currentTimeline = fl.getDocumentDOM().timelines[0];
fl.trace(currentTimeline.getGuidelines());