Update function.

Update function.

Hi everybody,
I need your help to solve a problem : when I run a page of my site , the system automatically performs a js function that I should not . This function is used to update student grades : when the teacher types the student grades , the function updates the db . I do not want this  function is automatically executed when the page loads .

this is the js function:

function cambiaProposta(arg1, arg2, arg3, arg4, arg5, arg6, event) {
 
        var request;
        request = new XMLHttpRequest();

        request.open("GET", "salvaProposta.php?&a="+arg1+"&b="+arg2+"&c="+arg3+"&d="+arg4, true);
        request.onreadystatechange = function() {
        if(request.readyState == 4) {
            var response = request.responseText;
            document.getElementById('finale').innerHTML = response;
            $("#votoa1"+arg5).val(arg4);
            if ($("#votoa1"+arg5).val() < 6)
            {
                $("#votoa1"+arg5).css('color', 'red');
            }else{
                $("#votoa1"+arg5).css('color', 'black');
            }           
        }
    }
    request.send(null);       
 
}
</script>

Thanks in advance

Tegatti