Chat numbers for #indiediscotheque

chatnums.js

var chatsolab = 1;
$("#chat-txt-message").bind("keyup", function() {
    var start = this.selectionStart;
    var lastChar = String.fromCharCode(this.value.charCodeAt(start - 1));
    
    if( lastChar == "@" ) {
        $("#chat-txt-message").val("@");
    } else if( lastChar == "!" ) {
        $("#chat-txt-message").val("!");
    } else if( event.which == 13 ) {
        var chatsolab = Math.floor(Math.random() * 1000) + 1;
        if (chatsolab < 10) {
            chatsolab = "0" + chatsolab;
        }
        $("#chat-txt-message").val("`"+chatsolab+"` ");
    }
});