[jQuery] how to use index instead of ID (adding class to A element in UL LI list)

[Tomas25]

Hi everyone,

i have this code:

$(document).ready(function() {
   var element = $(".mainSubNav ul li a");
   element.mouseover(function() {
      idLi = $(this).attr("id");
      $(".mainSubNav ul li a#" + (parseInt(idLi) -
1)).addClass("bgNone2");
   }).mouseout(function() {
      $(".mainSubNav ul li a#" + (parseInt(idLi) -
1)).removeClass("bgNone2");
   });
});


how can I change it that it will be catching index of LI A elements,
instead of ID's ?? because I don't want to use ID's for A elements if
I can use index "[0,1,3,...,i]" of LI or A elements

thx a lot for help... If this explanation is not enough, let me know,
I will try to explain it with further information