function $$(obj) {return document.getElementById(obj);}
function reg(){
$$('regform').style.left=(screen.width-275)/2+"px";
$$('regform').style.display="block";
}
function displayPres(){
var code='';
if($$('pres')){
$$('pres').style.width="670px";
$$('pres').style.margin="0 auto";
$$('pres').innerHTML=code;
}
}
function show(){
var code='Web 2 Applications in PHP
';
$$('ppt').innerHTML=code;
}
function validate(){
var fname=rochak.trim($$('fname').value);
var email=rochak.trim($$('email').value);
var mobile=rochak.trim($$('mobile').value);
var add=rochak.trim($$('add').value);
if (fname==""){
alert("Please enter your full name.");
$$('fname').focus();
return false;
}
if (email==""){
alert("Please enter your email address.");
$$('email').focus();
return false;
}
if (!rochak.isValidEmail(email)){
alert("Please enter a valid email address.");
$$('email').focus();
return false;
}
if (mobile==""){
alert("Please enter your mobile address.");
$$('mobile').focus();
return false;
}
if (mobile.length!=10){
alert("Please enter a valid mobile address.");
$$('mobile').focus();
return false;
}
if (add==""){
alert("Please enter your address here.");
$$('add').focus();
return false;
}
$$('submit').value="Please wait...";
$$('submit').disabled=true;
return true;
}
function closed(){ $$('regform').style.display="none";}