$("#dlepopup").dialog is not a function
function DLEconfirm(a,b,c){var d={};d[dle_act_lang[1]]=function(){$(this).dialog("close");$("#dlepopup").remove()};d[dle_act_lang[0]]=function(){$(this).dialog("close");$("#dlepopup").remove();c&&c()};$("#dlepopup").remove();$("body").append("<div id='dlepopup' title='"+b+"' style='display:none'><br />"+a+"</div>");$("#dlepopup").dialog({autoOpen:!0,width:500,dialogClass:"modalfixed",buttons:d});$(".modalfixed.ui-dialog").css({position:"fixed"});$("#dlepopup").dialog("option","position",["0","0"])}
из firebug