function validateForm()
{
    if (document.getElementById('pages').value == '' 
	|| document.getElementById('pages').value <= 0) {

	alert('Error! Invalid number of pages. Please fill the form correctly');
	return false;
    }
    
    var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
    if (document.getElementById('email').value == '' 
	|| reg.test(document.getElementById('email').value) == false) {

	alert('Error! Invalid Email Address. Please fill the form correctly');
	return false;
    }
    
    return true;
}