One time popup jQuery with facebook like page

fb.js

$(document).ready(function() {
	
function rC(nam) {var tC = document.cookie.split('; '); for (var i = tC.length - 1; i >= 0; i--) {var x = tC[i].split('='); if (nam == x[0]) return unescape(x[1]);} return '~';} 
function wC(nam,val) {document.cookie = nam + '=' + escape(val);} 
function lC(nam,pg) {var val = rC(nam); if (val.indexOf('~'+pg+'~') != -1) return false; val += pg + '~'; wC(nam,val); return true;} 
function firstTime(cN) {return lC('meskuciobatonelis',cN);} 
function thisPage() {var page = location.href.substring(location.href.lastIndexOf('\/')+1); pos = page.indexOf('.');if (pos > -1) {page = page.substr(0,pos);} return page;}

if (firstTime(thisPage())) {
  	$('<div>')
  		.html('<iframe src="//www.facebook.com/plugins/likebox.php?href=https%3A%2F%2Fwww.facebook.com%2Fmeskutis.lt&amp;width&amp;height=290&amp;colorscheme=light&amp;show_faces=true&amp;header=true&amp;stream=false&amp;show_border=true&amp;appId=153413347342" scrolling="no" frameborder="0" style="border:none; overflow:hidden; height:290px;" allowTransparency="true"></iframe>')
  		.dialog({
      modal: true,
      minWidth: 330,
      buttons: {
        Ok: function() {
          $( this ).dialog( "close" );
        }
      }
    });
}
                 
});