function chkCategory(sel_value) {
   if (sel_value != undefined) {
    //alert("Check");
    if (sel_value == 2) {
        document.getElementById("search_category").selectedIndex = 0;
        //document.getElementById("search_category").style.visibility= "hidden";
        document.getElementById("search_category").style.display= "none";
     }
    else {
        //document.getElementById("search_category").style.visibility= "visible";
        document.getElementById("search_category").style.display= "inline";
     }
}
}