body里面应该写什么? <html> <head> <title>选择结构程序举例2</title> <script language = "vbscript"> sub ShowMessage dim x,y x = inputbox("请输入x的值:") if not isnumeric(x) then msgbox "输入错误,请输入数字 !" else if x > 0 then y = x else if x < 0 then y = -x else y = 0 end if if isnumeric(x) then msgbox "x的值为"& x & ",y的值为" & y end if end sub call ShowMessage </script> </head>