var mgc_items = new Object();
                                   var mgc_adding_items = new Object();
                                   var mgc_cart_total = 0;
                                   var mgc_cart_delivery = ;
                                   var adddiscounts = 0;

function calculateDiscounts(val){
var adddiscounts = 0;
      switch( val ){

            

         }

         return adddiscounts;
         }