luis@467: function remove_author(link){
luis@468: 	$(link).previous('input[type=hidden]').value = 1;
luis@468: 	$(link).up('.author_fields').remove();
luis@468: }
luis@468: 
luis@469: function remove_fields(link) {
luis@469:   $(link).previous("input[type=hidden]").value = "1";
luis@469:   $(link).up(".fields").hide();
luis@469: }
luis@469: 
luis@468: function add_fields(link, association, content) {
luis@468:   var new_id = new Date().getTime();
luis@468:   var regexp = new RegExp("new_" + association, "g")
luis@469:   $(link).up().insert({
luis@469:     before: content.replace(regexp, new_id)
luis@469:   });
luis@467: }