<!--
function per() {
 a = document.form1.a.value/100;
 b = a*document.form1.b.value;
 document.form1.total1.value = b
 }
function per2() {
 a = document.form1.c.value;
 b = document.form1.d.value;
 c = a/b;
 d = c*100;
 document.form1.total2.value = d
 }
//-->