<!--
function percsemp() {
 a = document.percent.a.value/100;
 b = a*document.percent.b.value;
 document.percent.percents.value = b
 }
function ricperc() {
 a = document.percent.c.value;
 b = document.percent.d.value;
 c = a/b;
 d = c*100;
 document.percent.percentr.value = d
 }
//-->