$.extend($.expr[':'],{'i-contains':function(elem,i,match,array){return(elem.textContent||elem.innerText||'').toLowerCase().indexOf((match[3]||'').toLowerCase())>=0;},'i-does-not-contain':function(elem,i,match,array){return(elem.textContent||elem.innerText||'').toLowerCase().indexOf((match[3]||'').toLowerCase())===-1;}});