function searchmode(x)
{
if( x == 0 )
   complete_author(0,1,1);
else if( x == 1 )
   complete_author(1,0,1);
else if( x == 2 )
   complete_author(1,1,0);
remove_operators();
remove_issn();
document.search.I_XX.value = x;
document.search.submit();
}