function cateClck(id){
    if(document.getElementById(id).style.display == "none"){
        document.getElementById(id).style.display = ""
        document.getElementById(id+"_img").src = "/images/on.gif"
    }else{
        document.getElementById(id).style.display = "none"
        document.getElementById(id+"_img").src = "/images/off.gif"
    }
}