// formule per il calocolo da Sistema Imperiale a Metrico
function formula(){
// formula per la conversione delle misure di lunghezza	
	if (document.form1.lunghezza.options[document.form1.lunghezza.selectedIndex].value==1){
							num1= parseFloat(document.form1.input1.value);
							result=parseFloat(num1*25.4);	
							document.form1.risultato.value = result;
							document.form1.misura.value="Millimeters";
							}
					else if (document.form1.lunghezza.options[document.form1.lunghezza.selectedIndex].value==2){
							num1= parseFloat(document.form1.input1.value);
							result=parseFloat(num1*0.3048);	
							document.form1.risultato.value = result;
							document.form1.misura.value="Meters";
							}
					else if (document.form1.lunghezza.options[document.form1.lunghezza.selectedIndex].value==3){
							num1= parseFloat(document.form1.input1.value);
							result=parseFloat(num1*0.9144);	
							document.form1.risultato.value = result;
							document.form1.misura.value="Meters";
							}
					else if (document.form1.lunghezza.options[document.form1.lunghezza.selectedIndex].value==4){
					
							num1= parseFloat(document.form1.input1.value);
							result=parseFloat(num1*1.6093);	
							document.form1.risultato.value = result;
							document.form1.misura.value="Kilometers";
							}
					else {
							num1= parseFloat(document.form1.input1.value);
							result=parseFloat(num1*1.8522);	
							document.form1.risultato.value = result;
							document.form1.misura.value="Kilometers";
							}
}
function formula2(){
// Formula per la conversione delle misure di superficie

	if (document.form2.superficie.options[document.form2.superficie.selectedIndex].value==1){
							num1= parseFloat(document.form2.input2.value);
							result=parseFloat(num1*645.16);	
							document.form2.risultato2.value = result;
							document.form2.misura2.value="Square Millimeters";
							}

					else if (document.form2.superficie.options[document.form2.superficie.selectedIndex].value==2){
							num1= parseFloat(document.form2.input2.value);
							result=parseFloat(num1*0.0929);	
							document.form2.risultato2.value = result;
							document.form2.misura2.value="Square Meters";
							}
					else {
							num1= parseFloat(document.form2.input2.value);
							result=parseFloat(num1*0.8361);	
							document.form2.risultato2.value = result;
							document.form2.misura2.value="Square Meters";
							}


}
function formula3(){
// Formula per la conversione delle misure di volume

	if (document.form3.volume.options[document.form3.volume.selectedIndex].value==1){
							num1= parseFloat(document.form3.input3.value);
							result=parseFloat(num1*0.568);	
							document.form3.risultato3.value = result;
							document.form3.misura3.value="Cubic Decimeter";
							}
							else if (document.form3.volume.options[document.form3.volume.selectedIndex].value==2){
							num1= parseFloat(document.form3.input3.value);
							result=parseFloat(num1*4.5460);	
							document.form3.risultato3.value = result;
							document.form3.misura3.value="Liters";
							}
							else if (document.form3.volume.options[document.form3.volume.selectedIndex].value==3){
							num1= parseFloat(document.form3.input3.value);
							result=parseFloat(num1*3.7850);	
							document.form3.risultato3.value = result;
							document.form3.misura3.value="Liters";
							}
							else if (document.form3.volume.options[document.form3.volume.selectedIndex].value==4){
							num1= parseFloat(document.form3.input3.value);
							result=parseFloat(num1*16.3870);	
							document.form3.risultato3.value = result;
							document.form3.misura3.value="Cubic Centimeters";
							}
							else if (document.form3.volume.options[document.form3.volume.selectedIndex].value==5){
							num1= parseFloat(document.form3.input3.value);
							result=parseFloat(num1*0.0283);	
							document.form3.risultato3.value = result;
							document.form3.misura3.value="Cubic Meters";
							}
							else{
							num1= parseFloat(document.form3.input3.value);
							result=parseFloat(num1*0.7646);	
							document.form3.risultato3.value = result;
							document.form3.misura3.value="Cubic Meters";
							}
	}
function formula4(){
	if (document.form4.peso.options[document.form4.peso.selectedIndex].value==1){
							num1= parseFloat(document.form4.input4.value);
							result=parseFloat(num1*0.0648);	
							document.form4.risultato4.value = result;
							document.form4.misura4.value="Grams";
							}
							else if (document.form4.peso.options[document.form4.peso.selectedIndex].value==2){
							num1= parseFloat(document.form4.input4.value);
							result=parseFloat(num1*28.3490);	
							document.form4.risultato4.value = result;
							document.form4.misura4.value="Grams";
							}
							else {
							num1= parseFloat(document.form4.input4.value);
							result=parseFloat(num1*0.4536);	
							document.form4.risultato4.value = result;
							document.form4.misura4.value="Kilograms";
							}
							
	}
function formula1_m(){
// formula per la conversione delle misure di lunghezza da sistema metrico ad anglosassone	
	if (document.form1.lunghezza.options[document.form1.lunghezza.selectedIndex].value==1){
							num1= parseFloat(document.form1.input1.value);
							result=parseFloat(num1*0.0394);	
							document.form1.risultato.value = result;
							document.form1.misura.value="Inches";
							}
					else if (document.form1.lunghezza.options[document.form1.lunghezza.selectedIndex].value==2){
							num1= parseFloat(document.form1.input1.value);
							result=parseFloat(num1*3.2808);	
							document.form1.risultato.value = result;
							document.form1.misura.value="Feets";
							}
					else if (document.form1.lunghezza.options[document.form1.lunghezza.selectedIndex].value==3){
							num1= parseFloat(document.form1.input1.value);
							result=parseFloat(num1*1.0936);	
							document.form1.risultato.value = result;
							document.form1.misura.value="Yards";
							}
					else if (document.form1.lunghezza.options[document.form1.lunghezza.selectedIndex].value==4){
					
							num1= parseFloat(document.form1.input1.value);
							result=parseFloat(num1*0.6214);	
							document.form1.risultato.value = result;
							document.form1.misura.value="Miles";
							}
					else {
							num1= parseFloat(document.form1.input1.value);
							result=parseFloat(num1*0.5399);	
							document.form1.risultato.value = result;
							document.form1.misura.value="Nautical Miles";
							}
}

function formula2_m(){
// Formula per la conversione delle misure di superficie

	if (document.form2.superficie.options[document.form2.superficie.selectedIndex].value==1){
							num1= parseFloat(document.form2.input2.value);
							result=parseFloat(num1*0.0016);	
							document.form2.risultato2.value = result;
							document.form2.misura2.value="Square Inches";
							}

					else if (document.form2.superficie.options[document.form2.superficie.selectedIndex].value==2){
							num1= parseFloat(document.form2.input2.value);
							result=parseFloat(num1*10.7643);	
							document.form2.risultato2.value = result;
							document.form2.misura2.value="Square Feets";
							}
					else {
							num1= parseFloat(document.form2.input2.value);
							result=parseFloat(num1*1.1960);	
							document.form2.risultato2.value = result;
							document.form2.misura2.value="Square Yards";
							}


}

function formula3_m(){
// Formula per la conversione delle misure di volume

	if (document.form3.volume.options[document.form3.volume.selectedIndex].value==1){
							num1= parseFloat(document.form3.input3.value);
							result=parseFloat(num1*1.7606);	
							document.form3.risultato3.value = result;
							document.form3.misura3.value="Pints";
							}
							else if (document.form3.volume.options[document.form3.volume.selectedIndex].value==2){
							num1= parseFloat(document.form3.input3.value);
							result=parseFloat(num1*0.22);	
							document.form3.risultato3.value = result;
							document.form3.misura3.value="UK Gallons";
							}
							else if (document.form3.volume.options[document.form3.volume.selectedIndex].value==3){
							num1= parseFloat(document.form3.input3.value);
							result=parseFloat(num1*0.2642);	
							document.form3.risultato3.value = result;
							document.form3.misura3.value="USA Gallons";
							}
							else if (document.form3.volume.options[document.form3.volume.selectedIndex].value==4){
							num1= parseFloat(document.form3.input3.value);
							result=parseFloat(num1*0.0610);	
							document.form3.risultato3.value = result;
							document.form3.misura3.value="Cubic Inches";
							}
							else if (document.form3.volume.options[document.form3.volume.selectedIndex].value==5){
							num1= parseFloat(document.form3.input3.value);
							result=parseFloat(num1*35.3357);	
							document.form3.risultato3.value = result;
							document.form3.misura3.value="Cubic Feet";
							}
							else{
							num1= parseFloat(document.form3.input3.value);
							result=parseFloat(num1*1.3079);	
							document.form3.risultato3.value = result;
							document.form3.misura3.value="Cubic Yards";
							}
	}
	function formula4_m(){
	if (document.form4.peso.options[document.form4.peso.selectedIndex].value==1){
							num1= parseFloat(document.form4.input4.value);
							result=parseFloat(num1*15.4321);	
							document.form4.risultato4.value = result;
							document.form4.misura4.value="Grains";
							}
							else if (document.form4.peso.options[document.form4.peso.selectedIndex].value==2){
							num1= parseFloat(document.form4.input4.value);
							result=parseFloat(num1*0.0353);	
							document.form4.risultato4.value = result;
							document.form4.misura4.value="Ounces";
							}
							else {
							num1= parseFloat(document.form4.input4.value);
							result=parseFloat(num1*2.2046);	
							document.form4.risultato4.value = result;
							document.form4.misura4.value="Pounds";
							}
							
	}