function updateForm(){
		if (document.membership.email_1.value==""){
			alert("Please provide us with a valid email address so we can contact you");
			return false;
		}
		if (document.membership.firstnames.value==""){
			alert("Please provide us with your first name(s)");
			return false;
		}
		if (document.membership.surname.value==""){
			alert("Please provide us with your surname");
			return false;
		}
		if (document.membership.iti_class.value==""){
			alert("You must first have ITI membership if you wish to join the ITI Italian Network");
			return false;
		}
		if (document.membership.language_1.value != ""){
			if ((document.membership.language_1.value == "Italian") || (document.membership.targlang_1.value == "Italian")){
			} else {
				alert("Either your first source language or target language must be Italian!");
				return false;
			}
		}
		if (document.membership.language_2.value != ""){
			if ((document.membership.language_2.value == "Italian") || (document.membership.targlang_2.value == "Italian")){
			} else {
				alert("Either your second source language or target language must be Italian!");
				return false;
			}
		}
		if (document.membership.language_3.value != ""){
			if ((document.membership.language_3.value == "Italian") || (document.membership.targlang_3.value == "Italian")){
			} else {
				alert("Either your third source language or target language must be Italian!");
				return false;
			}
		}
		if (document.membership.language_4.value != ""){
			if ((document.membership.language_4.value == "Italian") || (document.membership.targlang_4.value == "Italian")){
			} else {
				alert("Either your fourth source language or target language must be Italian!");
				return false;
			}
		}
		if (document.membership.language_5.value != ""){
			if ((document.membership.language_5.value == "Italian") || (document.membership.targlang_5.value == "Italian")){
			} else {
				alert("Either your fifth source language or target language must be Italian!");
				return false;
			}
		}
		if (document.membership.language_6.value != ""){
			if ((document.membership.language_6.value == "Italian") || (document.membership.targlang_6.value == "Italian")){
			} else {
				alert("Either your sixth source language or target language must be Italian!");
				return false;
			}
		}
		if ((document.membership.newlanguage1.value =="" && document.membership.newlanguage2.value == "") && (document.membership.language_1.value == "" && document.membership.targlang_1.value =="") && (document.membership.language_2.value == "" && document.membership.targlang_2.value =="") && (document.membership.language_3.value == "" && document.membership.targlang_3.value =="") && (document.membership.language_4.value == "" && document.membership.targlang_4.value =="") && (document.membership.language_5.value == "" && document.membership.targlang_5.value =="") && (document.membership.language_6.value == "" && document.membership.targlang_6.value =="")){
					alert("You must specify which languages you use in your work");
					return false;
		} else {
			return true;
		}
}