//script per calcolo peso
		function pesoShepard(form) {
		dbp=eval(form.dbp.value);
		ca=eval(form.ca.value);
		
		Shepard=Math.pow(10,((0.166*dbp)+(0.046*ca)
		-(2.646*(dbp*ca)/1000)-1.7492));
		form.pesoshepard.value = (Math.round(Shepard*1000)/1000);
		}
		function pesoCampbell(form) {
		ca=eval(form.ca.value);
		Campbell=Math.pow(2.71828,((0.282*ca)-(Math.pow(ca,2)*0.00331)
		-4.564));
		form.pesocampbell.value = (Math.round(Campbell*1000))/1000;
		}
		function pesoMedia(form) {
		media=(Campbell*1000+Shepard*1000)*0.5;
		form.pesomedia.value = (Math.round(media))/1000;
		}