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setTimeout(function(){ document.getElementById("chat_msg").onkeydown = function(ev){ var is_tab = ev.which == 9; if(is_tab){ var words = this.value.split(" "); var word = words[words.length-1]; if(!word) return !is_tab; users_list = document.getElementById("online_list").children; for(i in users_list){ var username = users_list[i].innerText; if(!username) break; username = username.replace(/^\+/,""); if(username.toLowerCase().indexOf(word.toLowerCase()) == 0) { this.value = this.value.replace(word, "@"+username+": "); break; }}} return !is_tab; }}, 4000 );