// JavaScript Document

function validateForm()
{
	var x=document.getElementById('author').value;
	var y=document.getElementById('email').value;
	var z=document.getElementById('comment').value;
	
	if(x==null || x=="")
	  {
		  alert("Your name must be filled out");
		  return false;
	  }
	else if(y==null || y=="")
	  {
		  alert("Your email must be filled out");
		  return false;
	  }
	  	else if(z==null || z=="")
	  {
		  alert("Your comment must be filled out");
		  return false;
	  }
}