<!--

function jpolecalc(form)
{
var num_freq_A;
var num_freq_B;
var num_freq_C;
var num_freq_D;

num_freq_A = eval(form.frequency.value);
num_freq_A = Math.round(( 705 / num_freq_A ) * 100) * .01;

num_freq_B = eval(form.frequency.value);
num_freq_B = Math.round(( 234 / num_freq_B) * 100) * .01;

num_freq_C = eval(form.frequency.value);
num_freq_C = Math.round(( 23 / num_freq_C ) * 100) * .01;

num_freq_D = eval(form.frequency.value);
num_freq_D = Math.round(( 22 / num_freq_D) * 100) * .01;

if (num_freq_A > 0)
     {
     form.jpol_A.value = num_freq_A;
     form.inches_jpol_A.value = Math.round(form.jpol_A.value * 12*100) * 0.01;
     form.mtrs_jpol_A.value =  Math.round(form.jpol_A.value * .3048 * 1000) * .001;
 }
else
     {
     form.jpol_A.value = 0;
     form.quarter_jpol_A = 0;
     }
if (num_freq_B > 0)
     {
     form.jpol_B.value = num_freq_B;
     form.inches_jpol_B.value =  Math.round(form.jpol_B.value * 12* 100) * .01;
     form.mtrs_jpol_B.value =  Math.round(form.jpol_B.value * .3048* 1000) * .001;
 }
else
     {
     form.jpol_B.value = 0;
     form.quarter_jpol_B = 0;
     }
if (num_freq_C > 0)
     {
     form.jpol_C.value = num_freq_C;
     form.inches_jpol_C.value =  Math.round(form.jpol_C.value * 12* 100) * .01;
     form.mtrs_jpol_C.value =  Math.round(form.jpol_C.value * .3048* 1000) * .001;
 }
else
     {
     form.jpol_C.value = 0;
     form.quarter_jpol_C = 0;
     }
if (num_freq_D > 0)
     {
     form.jpol_D.value = num_freq_D;
     form.inches_jpol_D.value =  Math.round(form.jpol_D.value * 12* 100) * .01;
     form.mtrs_jpol_D.value =  Math.round(form.jpol_D.value * .3048* 1000) * .001;
 }
else
     {
     form.jpol_D.value = 0;
     form.quarter_jpol_D = 0;
     }
}

// --->