function selectAll(b){
    var c = document.all('_selects');
    if(c==null)
    return;
    
    if (c.length!=null){
      for(var i = 0; i < c.length ;++i)
        c[i].checked = b && !(c[i].disabled);
    }else{
      c.checked = b;
	}
}

function selectAllByField(b, fieldName) {
	var c = document.getElementsByName(fieldName);
	
	if(c==null)
    return;
    
    if (c.length!=null){
      for(var i = 0; i < c.length ;++i)
        c[i].checked = b && !(c[i].disabled);
    }else{
      c.checked = b;
	}
}

function showFirstPage(FO) {
  if(FO == null){
    FO = document.formList;
  }
  if (isNaN(parseInt(FO._currpage.value)) ||
      isNaN(parseInt(FO._pagelines.value)) ||
      isNaN(parseInt(FO._rowcount.value))) {
    return;
  }

//  var pageNo = parseInt(FO._currpage.value);
  var pageCount = Math.ceil(parseInt(FO._rowcount.value) /
                            parseInt(FO._pagelines.value));

  if (pageCount > 1) {
    FO._currpage.value = 1;
    FO.submit();
  }
}

function showPreviousPage(FO) {
  if(FO == null){
    FO = document.formList;
  }
  if (isNaN(parseInt(FO._currpage.value)) ||
      isNaN(parseInt(FO._pagelines.value)) ||
      isNaN(parseInt(FO._rowcount.value))) {
    return;
  }

  var pageNo = parseInt(FO._currpage.value);
//  var pageCount = Math.ceil(parseInt(FO._rowcount.value) /
//                            parseInt(FO._pagelines.value));

  if (pageNo > 1) {
    FO._currpage.value = pageNo - 1;
    FO.submit();
  }
}

function showNextPage(FO) {

  if(FO == null){
    FO = document.formList;
  }

  if (isNaN(parseInt(FO._currpage.value)) ||
      isNaN(parseInt(FO._pagelines.value)) ||
      isNaN(parseInt(FO._rowcount.value))) {
    return;
  }
 
  var pageNo = parseInt(FO._currpage.value);
  var pageCount = Math.ceil(parseInt(FO._rowcount.value) /
                            parseInt(FO._pagelines.value));

  if (pageCount > 1 && pageCount > pageNo) {
    FO._currpage.value = pageNo + 1;
    FO.submit();
  }
}

function showLastPage(FO) {
  if(FO == null){
    FO = document.formList;
  }
  if (isNaN(parseInt(FO._currpage.value)) ||
      isNaN(parseInt(FO._pagelines.value)) ||
      isNaN(parseInt(FO._rowcount.value))) {
    return;
  }

//  var pageNo = parseInt(FO._currpage.value);
  var pageCount = Math.ceil(parseInt(FO._rowcount.value) /
                            parseInt(FO._pagelines.value));

  if (pageCount > 0) {
    FO._currpage.value = pageCount;
    FO.submit();
  }
}

function jumpPage(){
  if (isNaN(parseInt(document.formList._currpage.value)) ||
      isNaN(parseInt(document.formList._pagelines.value)) ||
      isNaN(parseInt(document.formList._rowcount.value))) {
    return;
  }

  var pageNo = parseInt(document.formList._selectpage.value);
  var pageCount = Math.ceil(parseInt(document.formList._rowcount.value) /
                            parseInt(document.formList._pagelines.value));

  if (pageCount > 1 && pageCount >= pageNo) {
    document.formList._currpage.value = pageNo;
    document.formList.submit();
  }
}

function resetPage(FO) {
  if(FO == null){
    FO = document.formList;
  }
  FO._currpage.value = '1';
}

function query(){
	document.formList._currpage.value = '1';
	document.formList.submit();
	
}
/* 导出 */
function exp(){
	document.formExport.submit();
}

function resetForm(FO) {
  if(FO == null){
    FO = document.formList;
  }
  FO._orderby.value = '';
  FO._desc.value = '';
  FO._currpage.value = '1';
}

function resetAll() {
	var elements = document.formList.elements;
	for (var i = 0; i < elements.length; i++) {
		var elementID = elements[i].id;
		if (elementID.indexOf("qry_") != -1) {
				elements[i].value="";
		}
	}
}