js 分页

/*

  curPage: 当前页              数字[必须]
  countPage: 总共多少页         数字[必须]
  para:  代表页码的关键字 字符串[可省略,如省略则默认代表页码的关键字为page] 比如: "pag"

    用法举例:
        new page(5, 60, "pag");
            5                   当前页码
            60                      总共多少页
            "pag"               分页的关键字
*/
function page(curPage, countPage, para){
    if(isNaN(parseInt(curPage)) || isNaN(parseInt(countPage)))return;
    curPage = parseInt(curPage);
    countPage = parseInt(countPage);
    curPage = curPage<1 ? 1 : curPage;
    countPage = countPage<1 ? 1 : countPage;
    curPage = curPage > countPage? countPage : curPage;
    this.co = countPage;
    this.para = para || 'page';
    this.pa = ['<table cellspacing="4" cellpadding="1"><tbody><tr align="center">'];
    if(countPage<10){
        this.deal('<td class="page"><a href="{para}">{page}</a></td>', 1, curPage);
        this.pa.push('<td class="page2"><strong>'+curPage+'</strong></td>');
        this.deal('<td class="page"><a href="{para}">{page}</a></td>', curPage+1, countPage+1);
    }else{
      if(curPage <= 5){
          this.deal('<td class="page"><a href="{para}">{page}</a></td>', 1, curPage);
          this.pa.push('<td class="page2"><strong>'+curPage+'</strong></td>');
          this.deal('<td class="page"><a href="{para}">{page}</a></td>', curPage+1, 10);
          this.deal('<td class="page"><a title="下十页" href="{para}"><img src="sfc_files/Next.gif" width="8" height="8" border="0" /></a></td>', (curPage+9>countPage?countPage:curPage+9));
          this.deal('<td class="page"><a title="尾页" href="{para}"><img src="sfc_files/Last.gif" width="9" height="8" border="0" /></a></td>', countPage);
      }else if(curPage>=(countPage-3)){
          this.deal('<td class="page"><a title="第一页" href="{para}"><img src="sfc_files/First.gif" width="8" height="8" border="0" /></a></td>', 1);
          this.deal('<td class="page"><a title="上十页" href="{para}"><img src="sfc_files/Previous.gif" width="9" height="8" border="0" /></a></td>',  (curPage-9<1?1:curPage-9));
          this.deal('<td class="page"><a href="{para}">{page}</a></td>', (curPage-8)+(countPage-curPage) , curPage);
          this.pa.push('<td class="page2"><strong>'+curPage+'</strong></td>');
          this.deal('<td class="page"><a href="{para}">{page}</a></td>', curPage+1, countPage+1);
      }else{
          this.deal('<td class="page"><a title="第一页" href="{para}"><img src="sfc_files/First.gif" width="8" height="8" border="0" /></a></td>', 1);
          this.deal('<td class="page"><a title="上十页" href="{para}"><img src="sfc_files/Previous.gif" width="9" height="8" border="0" /></a></td>',  (curPage-9<1?1:curPage-9));
          this.deal('<td class="page"><a href="{para}">{page}</a></td>', curPage-4, curPage);
          this.pa.push('<td class="page2"><strong>'+curPage+'</strong></td>');
          this.deal('<td class="page"><a href="{para}">{page}</a></td>', curPage+1, curPage+5);
          this.deal('<td class="page"><a title="下十页" href="{para}"><img src="sfc_files/Next.gif" width="8" height="8" border="0" /></a></td>', (curPage+9>countPage?countPage:curPage+9));
          this.deal('<td class="page"><a title="尾页" href="{para}"><img src="sfc_files/Last.gif" width="9" height="8" border="0" /></a></td>', countPage);
      }
    }
    var id = Math.random().toString().substr(3,5);
    this.deal('<td><input class="tabletitle1" id="page_num_'+id+'" url="{para}" style="30px;" size="2" value="1" name="page" /></td>', 99999999);
    this.pa.push('<td><input class="tabletitle1" type="button" value="GO" onclick="page.go(\'page_num_'+id+'\')" /></td>');
    this.pa.push('</tr></tbody></table>');
    document.write(this.pa.join(''));
    this.pa = null;
}
page.go = function(o){
    o = document.getElementById(o);
    o.value = o.value.replace(/[^\d]*/g, '') || 1;
    location.href = o.url.replace(/99999999/g, o.value);
}
page.prototype.deal = function(c, d, e){
    e = e || d+1;
    for(;d<e;d++){
        this.pa.push(c.replace(/\{para\}/g, this.url.set(location.href, this.para, d)).replace(/\{page\}/g, d));
    }
}
page.prototype.url = {
    set : function(url, p, v){
        var o = {};
        url = url.split("?");
        if (url.length>1){
            var a = url[1].split("&");
            for (var i=0;i<a.length;i++){
                var s = a[i].split("=");
                o[s[0]] = s[1];
            }
            o[p] = v;
            var a = [];
            for (var i in o){
                a.push(i+"="+o[i]);
            }
            return url[0] + "?" + a.join("&");
        }
        return url[0]+'?'+p+'='+v;
    }
}

pageIndex=Request.Params["page"];
<SCRIPT language=javascript>new page("+pageIndex+","+recordCount.ToString()+@",'page');</SCRIPT>