function valid(){

a = document.form1;


if(a.name.value==""){
alert("Please enter your Name");
a.name.style.background='white';
a.name.focus();
a.name.select();
return false;
}


/*if(a.surname.value==""){
alert("Please enter your surname");
a.surname.style.background='white';
a.surname.focus();
a.surname.select();
return false;
}
*/if(a.email.value==""){
alert("Please enter your Email");
a.email.style.background='white';
a.email.style.background='white';
a.email.focus();
a.email.select();
return false;
}
else
{
	var emailfilter=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i
	var returnval=emailfilter.test(document.form1.email.value)
	if (returnval==false){
		alert("Please enter a valid email address.")
		document.form1.email.select()
		return false;
}
}

/*if(isNaN(a.phone.value) || a.phone.value==""){
alert("Please enter your Phone");
a.phone.style.background='white';
a.phone.style.background='white';
a.phone.focus();
a.phone.select();
return false;
}*/

if(a.Subject.value==""){
alert("Please enter your Subject");
a.Subject.style.background='white';
a.Subject.focus();
a.Subject.select();
return false;
}

if(!a.comments.value){
alert("Please enter your Comment");
a.comments.focus();
a.comments.select();
return false;
}
document.form1.submit();
return true;
}