function check_form_feedback() 
{
 if ( feedback_form.name.value == "" ) 
 		{
		alert("Please input  [ Name  ]");
		feedback_form.name.focus();
		} 
	else if ( feedback_form.address.value == "" ) 
 		{
		alert("Please input [ Address]");
		feedback_form.address.focus();
		} 
	else if ( feedback_form.contact_person.value == "" ) 
 		{
		alert("Please input [ Contact Person ]");
		feedback_form.contact_person.focus();
		} 
	else if ( feedback_form.telephone_number.value == "" ) 
 		{
		alert("Please input [  Telephone Number ]");
		feedback_form.telephone_number.focus();
		} 
	else if ( feedback_form.email.value == "" ) 
	  	{
		alert("Please input [  Email]");
		feedback_form.email.focus();
		}
	 else  
	 	{
		return true;
		}
 return false;
}