function isNumberKey(evt)
{
 var charCode = (evt.which) ? evt.which : event.keyCode
 if (charCode > 31 && (charCode < 48 || charCode > 57))
 {
     alert("Please enter valid contact number");
    return false;
}
}
 
 
function check()
 {
	var s=document.enquiry;
	
	 
	if(s.f_name.value=="")
	{
	alert ("Please enter your full name");
	s.f_name.focus()
	return false;
	}
	 
	if(s.cname.value=="")
	{
	alert ("Please enter your company name");
	s.cname.focus()
	return false;
	}
	
	if(s.desg.value=="")
	{
	alert ("Please enter designation");
	s.desg.focus()
	return false;
	}
	if(s.desg.value=="")
	{
	alert ("Please enter designation");
	s.desg.focus()
	return false;
	}
	
	if(s.address.value=="")
	{
	alert ("Please enter address");
	s.address.focus()
	return false;
	} 
	
	if(s.email.value=="")
	{
	alert ("Please enter email id");
	s.email.focus()
	return false;
	}
	 
	 if (s.email.value.indexOf("@")<1 ||
    	s.email.value.indexOf(".")==-1 ||
    	s.email.value.indexOf(",")!=-1 ||
    	s.email.value.indexOf(" ")!=-1 ||
    	s.email.value.length<6)
  {
    alert("Please enter a valid E-mail address.\n" +
    "Example: name@gmail.com");
     s.email.focus();
     return false;
  }
 
 	if(s.phone.value == "" && s.mobile.value == "") 
	{
		alert("Please enter either Landline Phone or Mobile Phone Number or both!");
		s.mobile.focus();
		return false;
	} 
   	
		if (s.events.checked == false &&  s.Film.checked == false && s.celebrity.checked == false && s.corporate.checked == false && s.others.checked == false) 
	     
		{
			alert ("Please select enquiry regarding!");
			s.others.focus
			return false;
		}
	
	if(s.subject.value=="")
	{
	alert ("Please enter subject");
	s.subject.focus()
	return false;
	}
	 
	if(s.comments.value=="")
	{
	alert ("Please enter your comments");
	s.comments.focus()
	return false;
	}
   
	 return true;

	
}