function convert_measuring_units(txt) {
    //alert(txt);
    //var arguement= conversion_tools.myvalue.value;
    user_data = document.forms.conversion_tools.myvalue.value;

    if (txt == "fahrenheit") {
        //alert("hello worldf");
        //alert(user_data);
        user_data = (user_data / 0.5555555);
        user_data = (user_data + 32);
        //mymeasure.innerHTML = parseInt(myvalue.value)+" °F is "+parseInt(arguement)+ " °C";
        //mymeasure.innerHTML = parseInt(myvalue.value)+ " °C is " + parseInt(arguement)+ " °F";
        alert(parseInt(document.forms.conversion_tools.myvalue.value) + " °C is " + parseInt(user_data) + " °F");
    }
    else if (txt == "miles") {

        user_data = (user_data * 1000000);
        user_data = (user_data / 1609344);
        user_data = (user_data + 0);
        //mymeasure.innerHTML = parseInt(myvalue.value)+" miles is "+parseInt(arguement)+ " kilometres";
        //mymeasure.innerHTML = parseInt(myvalue.value)+ " kilometres is " +parseInt(arguement)+" miles ";
        alert(parseInt(document.forms.conversion_tools.myvalue.value) + " kilometres is " + parseInt(user_data) + " miles");

    }
    else if (txt == "gallons") {


        user_data = (user_data * 3785.412);
        user_data = Math.round((user_data / 10000));
        user_data = (user_data + 0);
        //mymeasure.innerHTML = parseInt(myvalue.value)+" gallons is "+parseInt(arguement)+ " litres";
        //mymeasure.innerHTML = parseInt(myvalue.value)+ " litres is " +parseInt(arguement)+" gallons";
        alert(parseInt(document.forms.conversion_tools.myvalue.value) + " litres is " + parseInt(user_data) + " gallons");


    }
}