Someone

kod php/html;<input id="<?=$prefix?>" style="text-align:center" size="1" type="text" name="<?=$id?>[prefix]" onkeyup="UCF(this);" value="<?=$prefix?>">  <script language="javascript">        <!--        var prefix_array=new Array(<?foreach ($prefix_array as $v) echo $v.", ";?>0);        function UCF(AField)        {                var check=1;                if (AField.id!=AField.value)                {                        if (AField.value=="") check=-1; else check=AField.value;                        if (prefix_array.in_array(check)) AField.style.color="red";                        else AField.style.color="black";                }        }        Array.prototype.in_array = function(p_val)        {                for(var i = 0, l = this.length; i < l; i++) {                        if(this[i] == p_val) {                        return i;                }        }                return false;        }