[OpenLayers-Users] Measuring on open layer map,Pls help

[sacprasanna]

Hi all,

These days I am try to develop web map using open layers.I copy source code
from  http://openlayers.org/dev/examples/measure.html here  Then I changed
code to display my data.But it does not work, even map is also not
showing.In chrome shows "Uncaught TypeError: Cannot call method
'containsLonLat' of null"

http://osgeo-org.1560.n6.nabble.com/file/n4957082/measure.txt measure.txt 
is the full code. 
Please forgive me about amount of data.
Really Thanks for your time.
What is the wrong of my code?Or is there are any method to measure on map?

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