/* PNG24 Alpha images */

function setPng24(obj) { 
    obj.width=obj.height=1; 
    obj.className=obj.className.replace(/\bpng24\b/i,''); 
    obj.style.filter = 
    "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+ obj.src +"',sizingMethod='image');" 
    obj.src='';  
    return ''; 
} 

/* 스크롤 메뉴 */
function thinkbrush() {
	ScrollMenu();
}

function ScrollMenu(){
	var bNetscape4plus = (navigator.appName == "Netscape" && navigator.appVersion.substring(0,1) >= "4"); 
	var bExplorer4plus = (navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.substring(0,1) >= "4"); 
	var menuFrom, menuTo, timerCheck, offset;
	var iMenu;
	if ( bNetscape4plus ) { 
		iMenu		= document.getElementById("inteliMenu");
	} 
	else if ( bExplorer4plus ) {
		iMenu		= inteliMenu;
	}
	menuFrom	= parseInt (iMenu.style.top, 10); 
	menuTo		= document.body.scrollTop + 20;
	timerCheck = 500;
	if ( menuFrom != menuTo ) { 
			offset = Math.ceil( Math.abs( menuTo - menuFrom ) / 10 ); 
			if ( menuTo < menuFrom ) 
				offset = -offset; 
			iMenu.style.top = parseInt (iMenu.style.top, 10) + offset; 
			timerCheck = 10;
	}
	setTimeout ("ScrollMenu()", timerCheck); 
}
/* 브라우저별 트랙백 카피  */
function tb_copy_clip(tburl)
{
	if (window.clipboardData) 
	{
		window.clipboardData.setData("Text", tburl);
	}
	else if (window.netscape) 
	{ 
		netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
		var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);
		if (!clip) return;
		var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);
		if (!trans) return;
		trans.addDataFlavor('text/unicode');
		var str = new Object();
		var len = new Object();
		var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);
		var copytext=tburl;
		str.data=copytext;
		trans.setTransferData("text/unicode",str,copytext.length*2);
		var clipid=Components.interfaces.nsIClipboard;
		if (!clip)	return false;
		clip.setData(trans,null,clipid.kGlobalClipboard);
	}
	alert('트랙백 주소가 클립보드에 저장되었습니다.');
}

/* 스마트 네비게이터 */
function setActiveStyleSheet(title) {
  var i, a, main;
  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;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

function createCookie(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 readCookie(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;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);