function validateForm()
{
var yourname=document.forms["contact-form"]["yourname"].value;
var email=document.forms["contact-form"]["email"].value;
var msg=document.forms["contact-form"]["msg"].value;
var err="";
if(yourname == null || yourname == "")
{
	err="Please enter your name";
}


var atpos=email.indexOf("@");
var dotpos=email.lastIndexOf(".");
if (atpos<1 || dotpos<atpos+2 || dotpos+2>=email.length)
  {
  err = err + "\nPlease enter a valid email address";
  }
 
 if (msg==null || msg=="")
  {
  	err = err + "\nPlease enter a message";
  }
  
  
  if(err != "")
  {
	  alert(err);
	  return false;
  }



}