function calwhr(form) {
 measw = form.measw.options[form.measw.selectedIndex].value;
 meash = form.meash.options[form.meash.selectedIndex].value;
 waist1       = form.waist.value/measw;
 hip1    = form.hip.value/meash;
 form.whr.value = waist1/hip1;
}