function valid_mail(email){
	if(email.indexOf("@") == -1) {
	  return false;
	}    
   	validarr = email.split("@");
   
   	if(validarr[0].length==0) {
   	  return false;
   	}
  	if(validarr[1].indexOf("@") >=0) {
   	  return false;
   	}
   	if(validarr[1].length==0) {
   	  return false;
   	}
   	if(validarr[1].length != 0) { 
      if(validarr[1].indexOf(".") == -1) {
   		return false;
 	  }
      validemail = validarr[1].split(".");
      if(validemail[0].length==0) { 
       	return false;
      }
      if(validemail[1].length==0) {
       	return false;
	  }
	  return true;
    }   // end of of validemail
}

function check_query(){
	var name=document.frmQuery.name.value;
	var email=document.frmQuery.email.value;
	var phone=document.frmQuery.phone.value;
	var query=document.frmQuery.query.value;
	if(name=='' || name.length<1){
		alert("Please enter your name");
		document.frmQuery.name.focus();
		return false;
	}
	if(!valid_mail(email)){
		alert("Please enter a valid email ID");
		document.frmQuery.email.focus()
		return false;
	}
	if(query=='' || query.length<4){
		alert("Please enter some query");
		document.frmQuery.query.focus();
		return false;
	}
}