function checkform() {
	pass=true;
	if (document.callme.name.value == ""){
		alert("Please enter your name");
		pass=false;
	}
	if (pass && document.callme.phone.value == ""){
		alert("Please enter your telephone number");
		pass=false;
	}
	
	if (pass){
		re2 = /[0-9]/;
		re1 = /[A-Z]|[a-z]/;
		if ((re2.test(document.callme.phone.value)) && (!re1.test(document.callme.phone.value)) ) {
			pass=  true;
		}
		else {
			alert("Please enter a valid phone number with no spaces");
			pass=false;
		}
	
	}
	if (pass){
		return true;
	}else{
		return false;
	}
}