// used by cgii.htm
function doubtrebtab()
{
var j, b1, b2, s, cl;
document.write("<tt>");
for (i=21;i<=42;i++)
  {document.write(i+": ");cl="";
   for (j=i;j<i+56;j+=7)
     { 
	if ((j % 5)==0 || (j % 5)==2)
	   {b1="<b>";s=j;b2="</b>";
		cl+=Math.round(j/2.5)+" ";}
	else {b1="";s="--";b2="";cl+="-- ";}
	document.write(b1+s+b2+" ");
    }
    document.write(" | " +cl+"<br>");
  }
document.write("</tt>");
}