Inserting dashboard on vf page

For inserting dashboard designed in salesforce on vf page we need to use <apex:iframe> tag and id of that dashboard as shown below.

vfpage  with dashboard:
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<apex:page sidebar="false" showHeader="false">
 <apex:iframe src="/01ZG0000000d9Qb?isdtp=nv" scrolling="true" height="1588px" width="100%"/>
</apex:page>

in the above  'src="/01ZG0000000d9Qb?isdtp=nv" '
if you are not  specifying "isdtp=nv" as a parameters it shows dashboard including header.

if you specify then it shows only dashboard with out header.


Output:
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