At this point you will find out that some routes are not correct.

Please use the following extent in Openlayers

       map.zoomToExtent(new OpenLayers.Bounds(894000, 
                                                   6850300, 
                                                   894500, 
                                                   6850600));

For example you get a wrong path like:

What you see in here in blue is the number of the vertices.

The three figures (black on grey) are the gid,the source-id

and the target-id of a Multilinestring.

By looking at the screenshot obviously the shortest path is via "Edinghäuser Straße", why is the route so, let`s say "weird"?

The start point is at the Multilinestring with the gid 2200, the source-id is the number 1363. The end point is at the Multilinestring with the gid 4220, the target_id is 2446.

Iy you the vertives 1363 and 2446 you understand why it goes that path, remember: The function for this is:

SELECT gid, the_geom
 	                             FROM dijkstra_sp_delta(
 	                                 '".TABLE."',
 	                                 ".$startEdge['source'].",
 	                                 ".$endEdge['target'].",
 	                                 3000

One solution is to do the calculation "twice", one as seen, and one more the other way round

SELECT gid, the_geom

FROM dijkstra_sp_delta(

'".TABLE."', ".$endEdgesource?.", ".$startEdgetarget?.", 3000

}}}

What will calculate from node 2445 on the Multilinestring 4220 to 1364 on Multiline 2200.