function checksignup(f) {

	 	if(f.signup_name.value == "") {
			alert('Please enter Name');
			f.signup_name.focus();
			return false;
		}


	 	if(f.signup_phone.value == "") {
			alert('Please Enter Phone Number');
			f.signup_phone.focus();
			return false;
		}
 
		var emailvalue = f.signup_email.value;
		var filter = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
	 	if (!filter.test(emailvalue)) {
			alert('Please enter a valid Email');
			f.signup_email.focus();
			return false;
		}
		
		if(f.signup_event.value == "") {
			alert('Please enter Event');
			f.signup_event.focus();
			return false;
		}
		
		var eventvalue = f.signup_event.value;
		var test = eventvalue.indexOf("X");
		if (test >= 0) {
			if(f.signup_password.value != "restricted456") {
				alert('This event is restricted! Please enter correct restricted Password');
				f.signup_password.focus();
				return false;
			}
		}
		else {
			if(f.signup_password.value != "epi123") {
				alert('Please enter correct Password');
				f.signup_password.focus();
				return false;
			}
		}

		return true;
}