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, 1); // 365에서 1로 수정 

				}


				var cookie = readCookie("style");

				var title = cookie ? cookie : getPreferredStyleSheet();

		  setActiveStyleSheet(title);