replace the $.browser(.webkit/ ...) deprecied by my idea

replace the $.browser(.webkit/ ...) deprecied by my idea

hi, i have a idea 

  1. $.browser = {extension : '', mozilla : false, webkit : false, khtml : false, opera : false, microsoft : false};

  3. if ($(body).css('-moz-user-select') !== undefined) {
  4.       $.browser.mozilla = true; 
  5.       $.browser.extension = "-moz-";
  6. }
  7. else if ($(body).css('-webkit-user-select') !== undefined) {
  8.       $.browser.webkit = true; 
  9.       $.browser.extension = "-webkit-";
  10. }
  11. else if ($(body).css('-khtml-user-select') !== undefined) {
  12.       $.browser.khtml = true; 
  13.       $.browser.extension = "-khtml-";
  14. }
  15. else if ($(body).css('-o-user-select') !== undefined) {
  16.       $.browser.opera = true; 
  17.       $.browser.extension = "-o-";
  18. }
  19. else if ($(body).css('-ms-user-select') !== undefined) {
  20.       $.browser.microsoft = true; 
  21.       $.browser.extension = "-ms-";
  22. }
my example, it's not perfect, but the idea is here