function calc() {
 window.open("calc.html", "","scrolbar=auto,menubar=no,status=no,directory=no,width=600,height=480,center=true,htkeys=no");
}

function validate() {
 if (document.f.name.value.length<3) {alert("Please enter your name!");document.f.name.value="";document.f.name.focus();return false;}
 s=document.f.email.value; p=s.indexOf(" "); k=s.indexOf("@"); K=s.indexOf("."); l=s.length;
 if (((l>0) && ((l<5) || (p>=0) || (k<=0) || (k>=l-2) || (K<=0) || (K>=l-1))) || (l<1)) {alert("Please enter your email address!");document.f.email.value="";document.f.email.focus();return false;}
 return true;
}

function reset(){
 document.f.reset();
 document.f.name.focus();
}

function send() {
 if (validate()) {
	document.f.action="f1.php";
	document.f.submit();
 }
}