function validate() {

var c = true;

if((document.register.realName.value == '') && c) 
	{ alert('Enter your name'); c = false; } 
	
if((document.register.email.value == '') && c) 
	{ alert('Enter your email address'); c = false; } 
	
if((document.register.address.value == '') && c) 
	{ alert('Enter your address'); c = false; } 	

if(c) document.register.submit.value = 'Sending ... '; 
return c;
	
} // end validate