jQuery.each(jQuery.browser, function(i, val) {
   var redirect = false;
   if(i=="mozilla"){
      if(parseFloat(jQuery.browser.version)<1.9){
	 redirect = true;
      }
   }else if(i=="msie"){
      if(parseInt(jQuery.browser.version)<7 ||parseInt(jQuery.browser.version)>8){
	 redirect = true;
      }
   }else if(i=="webkit"){
      /*safari y chrome*/
   }else{

   }

   if (redirect == true){
      window.location ="php/supportedbrowsers.php";
   }

});