Missing xrefs

Is there a program that will search a list of drawings to see if there are any missing xrefs? Opening every drawing to check for missing xrefs
is time consuming. If there is an easier way to do this please provide input. I use Autodesk Map 3D aka AutoCad 2005.
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<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
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