var funtionality_is_enabled=1;function engine_match(){if(funtionality_is_enabled!=1){return 0}var engines=new Array("google","aolsearch.aol.com","search.aol.com","search.yahoo.com","bing");for(var i=0;i<engines.length;i++){if(document.referrer.length>0&&document.referrer.indexOf(engines[i])!=-1){return 1}}return 0};