Help with javascript!

[retrocore]

<script language="javascript">
function show(k){
        document.getElementById(k).style.display="";
}
function hide(k){
        document.getElementById(k).style.display="none";
}
</script>
<div id="welcome">
<form action="#" method="post">
            <table border="0" width="100%" cellpadding="3" style="border-collapse: collapse">
            <tr>
                <td class="grn_title"><b>Please enter the number of the receiving cellphone:</b></td>
            </tr>
            <tr>
                <td height="29"><b>Number:</b><br /><input type="text" name="number" size="30"><br /><b>Please do not use dashes otherwise this will not work.</b></td>
            </tr>
            <tr>
                <td class="grn_title"><b>Please enter the subject you'd like to send:</b></td>
            </tr>
            <tr>
                <td height="30"><b>Subject:</b><br /><input type="text" name="subject" size="45"><b><br /> This will be included in the message.</b></td>
            </tr>
            <tr>
                <td class="grn_title"><b>Please enter the message you'd like to send:</b></td>
            </tr>
            <tr>
                <td height="27"><b>Message:</b><br /><textarea name="message" rows="3" cols="70"></textarea></td>
            </tr>
            <tr>
                <td class="grn_title"><b>Please enter the amount of text messages you'd like to send:</b></td>
            </tr>
            <tr>
                <td height="30"><b>Amount of messages:</b>
                <select size="1" name="amount">
                <option value="1">1</option>
                </select></td>
            </tr>
            <tr>
                <td class="grn_title"><b>Please choose the receivers service provider:</b></td>
            </tr>
            <tr>
                <td align="center">
                <?php
                get_providers();
                ?></td>
            </tr>
            <tr>
                <td align="center"><input type="submit" value="Send Message(s)!" name="submit"></div><a href="#k" onClick="hide('welcome');">Hide?</a>

The javascript at the top and the little onclick at the bottom, if you try this code out, clicking hide will hide the script I have in between the DIV. I need this div, to hide when the page is loaded, and have a SHOW link which will then show it, and I'd also then like to be able to hide it again.

Could anyone help?

[Tomm]

Add this to your DIV tag:

style="display: none;"

[retrocore]

Now I need to get the show code too work

[retrocore]

Done it, thanks everyone