function filter_table(str) {
    var t = $('item_table_tbody');
    var reg = new RegExp(str, 'i');
    var rows = t.getElementsByTagName('tr');
    for (var i=0, l=rows.length; i<l; i++) {
        var flg = false;
        if (str == '') {
            flg = true;
        } else {
            var tds = rows[i].getElementsByTagName('td');
            for (var j=0; j<=3; j++) { // column 1..4 を検索対象に
                var text;
                if (Prototype.Browser.IE) {
                    text = tds[j].innerText;
                } else {
                    text = tds[j].textContent;
                }
                if (text.match(reg)) {
                    flg = true;
                }
            }
        }
        if (flg) {
            Element.show(rows[i]);
        } else {
            Element.hide(rows[i]);
        }
    }
}

function getRequest(){
    if(location.search.length > 1) {
        var get = new Object();
        var ret = location.search.substr(1).split("&");
        for(var i = 0; i < ret.length; i++) {
            var r = ret[i].split("=");
            get[r[0]] = r[1];
        }
        return get;
    } else {
        return false;
    }
}

var get = getRequest();
function urlenc(str){
    if(str == undefined){
        return "";
    }else{
        return decodeURIComponent(str);
    }
}

var last = '';
var wait = setInterval(function(){
    var str = $F('search_js');
    if (last != str) {
        filter_table(str);
        last = str;
    }
}, 100);

function backToTop() {
    var x1 = x2 = x3 = 0;
    var y1 = y2 = y3 = 0;
    if (document.documentElement) {
        x1 = document.documentElement.scrollLeft || 0;
        y1 = document.documentElement.scrollTop || 0;
    }
    if (document.body) {
        x2 = document.body.scrollLeft || 0;
        y2 = document.body.scrollTop || 0;
    }
    x3 = window.scrollX || 0;
    y3 = window.scrollY || 0;
    var x = Math.max(x1, Math.max(x2, x3));
    var y = Math.max(y1, Math.max(y2, y3));
    window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));
    if (x > 0 || y > 0) {
        window.setTimeout("backToTop()", 25);
    }
}