// delete 
function confDel(mode) {
  var form = document.forms['register'];
  var message = [
'<div id="content">',
'<div id="addarea">',
'<div class="loading">',
'<img src="./img/common/ajax-loader.gif" alt="loading"><br>　データ処理中…',
'</div>',
'</div>',
'</div>'
].join("\n");

  if(mode == 'book') {
    title = form.title.value;;
  }else if(mode == 'tag') {
    title = form.tname.value;
  }
  if(confirm('本当に「'+title+'」を削除しますか？')) {
    if(mode == 'book') {
      form.m.value = 'delete';
    }
    form.submit();
    if(document.all) {document.all('mainarea').innerHTML = message};
    if(document.getElementById) {document.getElementById('mainarea').innerHTML = message};
  }
}

// key down block
function BlockEnter(evt){
  evt = (evt) ? evt : event; 
  var charCode=(evt.charCode) ? evt.charCode : 
  ((evt.which) ? evt.which : evt.keyCode);
  if ( Number(charCode) == 13 || Number(charCode) == 3) {
    return false;
  } else {
    return true;
  }
}

//css change
function setActiveStyleSheet(title) {
  var i, a, ch;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) {
	a.disabled = false;
      }
    }
  }
  checkSwicher(title);
  setCookie('style', title, 365);
}

function setCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function getCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

function checkSwicher(n) {
  if(document.chgcss)   
    checked('switch', n);
}

function checked(id, n) {
  document.getElementById(id+n).checked = true
}

window.onload = function(e) {
  var title = getCookie("style");
  if(!title) title = 1;
  checkSwicher(title);
}

function checkISBN() {
	if (document.isbn_multi_input_form.isbns.value.length == 0) {
		alert("ＩＳＢＮを入力してください");
		return false;
	} else {
		return true;
	}
}