jQuery.fn.extend({getUrlParam:function(d){d=escape(unescape(d));var c=[],b=null;if($(this).attr("nodeName")=="#document"){if(window.location.search.search(d)>-1)b=window.location.search.substr(1,window.location.search.length).split("&")}else if($(this).attr("src")!="undefined"){var a=$(this).attr("src");if(a.indexOf("?")>-1){b=a.substr(a.indexOf("?")+1);b=b.split("&")}}else if($(this).attr("href")!="undefined"){a=$(this).attr("href");if(a.indexOf("?")>-1){b=a.substr(a.indexOf("?")+1);b=b.split("&")}}else return null;
if(b===null)return null;for(a=0;a<b.length;a++)escape(unescape(b[a].split("=")[0]))==d&&c.push(b[a].split("=")[1]);return c.length===0?null:c.length==1?c[0]:c}});