Q:

jQuery changing font family and font size

I am trying to change font family and font size of the text that appears in a textarea and a container by choosing the font from the list, font size should be fixed. I am also trying to change color of the background when a font is picked. 
That is my code:
    <script type="text/javascript">     
    function changeFont(_name) {
        document.body.style.fontFamily = _name;
        document.textarea = _name;
    } 
    </script>

</head>
<body style="font-family">   
    <form id="myform">
        <input type="text" /> 
        <button>erase</button> 
        <select id="fs" onchange="changeFont(this.value);">
            <option value="arial">Arial</option>
            <option value="verdana">Verdana</option>
            <option value="impact">Impact</option>
            <option value="'ms comic sans'">MS Comic Sans</option>
        </select>
        <div align="left">
            <textarea style="resize: none;" id="mytextarea" 
                 cols="25" rows="3" readonly="readonly" wrap="on">
                Textarea
            </textarea>
            <div id='container'>
                <div id='float'>
                    <p>This is a container</p>
                </div>
    </form>
</body>

When I try it in the browser the font family does not change in the text area. It only changes in the container. I also do now know how to set a new font size and background for the container and the textarea when the font family is picked. 
I will appreciate any help guys!

A:

Full working solution :
HTML:
<form id="myform">
    <button>erase</button>
    <select id="fs"> 
        <option value="Arial">Arial</option>
        <option value="Verdana ">Verdana </option>
        <option value="Impact ">Impact </option>
        <option value="Comic Sans MS">Comic Sans MS</option>
    </select>

    <select id="size">
        <option value="7">7</option>
        <option value="10">10</option>
        <option value="20">20</option>
        <option value="30">30</option>
    </select>
</form>

<br/>

<textarea class="changeMe">Text into textarea</textarea>
<div id="container" class="changeMe">
    <div id="float">
        <p>
            Text into container
        </p>
    </div>
</div>

jQuery:
$("#fs").change(function() {
    //alert($(this).val());
    $('.changeMe').css("font-family", $(this).val());

});

$("#size").change(function() {
    $('.changeMe').css("font-size", $(this).val() + "px");
});

Fiddle here: http://jsfiddle.net/AaT9b/

A:

In my opinion, it would be a cleaner and easier solution to just set a class on the body and set the font-family in css according to that class.
don't know if that's an option in your case though.

