function d_places(n,p) {
	var factor = 1;
	var ans  = 0;
	var j = 0;
	for (j = 1; j <= p; j++)
		factor =  factor * 10.0;
	ans = (Math.round((n + 0.05 / (factor) ) * factor)) / factor;
	return ans;
}


function calc() {
	rexp = /\,/gi;
	newstr=".";
       document.f1.points.value = d_places(
            		(document.f1.weight.value.replace(rexp, newstr)/100)*
            		(document.f1.cals.value.replace(rexp, newstr)/60 + 
            		 document.f1.fat.value.replace(rexp, newstr)/9),1);
}