这段代码在xp和linux下执行，为什么结果不同？

function deleteProduct2_all(){

    if(confirm('确定要删除这些商品纪录吗？')){

        var str = new Object;

        str.rs = 'bijia';

        str.act = 'deleteProduct_all';



        var elements = document.getElementsByName("xlh");

        str.pid = "";

        for(var i=0;i<elements.length;i++){

              if(elements[i].checked){

               str.pid += elements[i].value + ",";

              }

         }

        $.get('index.php',str,function(s) {

            if(s=='ok'){

//                alert(123);

                np360buy(currentpage);

            }

        });

    }

}

function deleteProduct_allAction(){

            $bn = new buynow();

            echo "999";exit;

            if($bn->deleteProduct_all()){

                echo 'ok';

            }

            $this->noview();

        }

function deleteProduct_all(){

//			echo "111234";exit;

			$pid=substr($_GET['pid'],0,-1);

       		$sql='delete from pcnp_360buy where prid_360buy in ('.$pid.')';

		    if($this->delete($sql)){

		    	return true;

			}else

			{

				return false;

			}

		}