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<script language="JavaScript">
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function sums()
{
sum=0;
for(i=1;i<19;i++)
{
var elem=document.getElementById("r"+i);
if(elem.checked)sum=sum+parseInt(elem.value);
}
a=0;
s=parseInt(document.getElementById("r19").value);
if((s>0)&&(s<10))a=150
else if((s>9)&&(s<31))a=120
else if(s>30)a=100;
sum+=s*a;
document.formText.sumOut.value=sum;
}
//-->
</script>

<form name="formText">
<input type="radio" name="aa" id="r1" value="1">text 1
<input type="radio" name="aa" id="r2" value="2">text 2
<input type="radio" name="aa" id="r3" value="3">text 3
<input type="radio" name="aa" id="r4" value="4">text 4
<input type="radio" name="aa" id="r5" value="5">text 5<BR><BR>
<input type="checkbox" id="r6" value="6">text 6<BR>
<input type="checkbox" id="r7" value="7">text 7<BR>
<input type="checkbox" id="r8" value="8">text 8<BR>
<input type="checkbox" id="r9" value="9">text 9<BR>
<input type="checkbox" id="r10" value="10">text 10<BR>
<input type="checkbox" id="r11" value="11">text 11<BR>
<input type="checkbox" id="r12" value="12">text 12<BR>
<input type="checkbox" id="r13" value="13">text 13<BR>
<input type="checkbox" id="r14" value="14">text 14<BR>
<input type="checkbox" id="r15" value="15">text 15<BR><BR>
<input type="radio" name="bb" id="r16" value="16">text 16
<input type="radio" name="bb" id="r17" value="17">text 17
<input type="radio" name="bb" id="r18" value="18">text 18<BR><BR>
<input type="text" name="txt" id="r19" value="0"><BR><BR>
<input type="button" onclick="sums()" value="Подсчитать" id=b>
<br>Сумма:<br>
<input type="text" name="sumOut" disabled="false" value="">
</form>