function swapImage(sTargetId, sImageURL)
{
	var objTarget = document.getElementById(sTargetId);
	objTarget.src = sImageURL;
}


function validateForm(form_id,add,name,phone) 
{
   
   
   var sAdd 		= document.forms[form_id].elements[add].value;
   var sFullname 	= document.forms[form_id].elements[name].value;
   var sZipcode 	= document.forms[form_id].elements[phone].value;
   
   var sMessage		= "";
   
   if(sAdd != 4) 
   {
      sMessage += 'Wrong Value';
   }
   
   if (sFullname.length == 0)
   {
	   sMessage += '\nPlease provide your full name';
   }
   
   if (sZipcode.length == 0)
   {
	    sMessage += '\nPlease provide your phone number';
   }
   
   
   
   
   if (sFullname.length == 0 || sZipcode.length == 0 || sAdd != 4)
   {
	   alert(sMessage);
	   return false;
   }   
}