<script language="JavaScript"> function zat() { var d=document var k=0 k += Number(eval("summa.forma.options[summa.forma.selectedIndex]").value); return k } function cena (obj){ var a1=1*obj.iz1.value var a2=1*obj.iz2.value; var a3=1*obj.norma.value; var a4=1*obj.gos.value; var a5=1*obj.proc.value; var a6=100; var a7=10; var a8=1*obj.result.value; var a11=0; var h=a2*a6/a3/2/100; var s=((a8*h)+(a2/a3)*a4*(a5/a6)-(a1/a7)) if (s<a11){s=a11} var ss=Math.round(s*100)/100; obj.res.value=ss } </script> <form name="summa">