function validate_contact()
{
var flag=true;
var msg="";

if(document.getElementById("ctc_name").value=="")
{
	flag=false;
	msg="Please Enter Name";

	
}
else if(document.getElementById("ctc_student_name").value=="")
{
	flag=false;
	msg="Please Enter Student Name ";

	
}
else if(document.getElementById("ctc_telephone").value=="")
{
	flag=false;
	msg="Please Enter telephone number ";

	
}
else if(!regular(document.getElementById("ctc_telephone").value))
{
	flag=false;
	msg="Telephone number contains only numeric value and '-'";

	
}
else if(document.getElementById("ctc_email").value=="")
{
	flag=false;
	msg="Please Enter  Email";

	
}
else if(document.getElementById("ctc_teacher_name").value=="")
{
	flag=false;
	msg="Please Enter teacher name";

	
}
else if(document.getElementById("ctc_comment").value=="")
{
	flag=false;
	msg="Please Enter question or comment ";

	
}
if(flag==false && msg!="")
{
	alert(msg);
	return flag;

}
return true;
}

function regular(string) {

var Chars = "0123456789-";

for (var i = 0; i < string.length; i++)
{ if (Chars.indexOf(string.charAt(i)) == -1)

return false;
}

return true;
}