function subscriptionCheckBox(){
	if(cruise_special_deals_subscription.all.checked){
	   cruise_special_deals_subscription.site1.checked = false;
	   cruise_special_deals_subscription.site2.checked = false;
	   cruise_special_deals_subscription.site3.checked = false;
	   cruise_special_deals_subscription.site4.checked = false;
	   cruise_special_deals_subscription.site5.checked = false;
	   cruise_special_deals_subscription.site6.checked = false;
	   cruise_special_deals_subscription.site7.checked = false;
   }
}