Design a search form with css my purpose is to have searchform text like arte

Hello

on http://olivierbaudrydesign.free.fr/?page_id=9/

I decided to design a search form on my website
the first searchform is this :

you can see it on http://olivierbaudrydesign.free.fr/?page_id=29/
<div id="search">
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="get" name="searchform" id="searchform">
<input type="text" name="s" id="s"  value="Rechercher" />
<input type="image" alt="submit" src="/wp-content/themes/oupocreanum/images/return.gif"/>
</form>
</div>

and the original css is this `#search {
position: absolute;
top: -24px;
right: -16px;
margin: 0px;
margin-top: 0px;
}

#s {
width: 150px;
height: 17px;
background-image: url(/wp-content/themes/oupocreanum/images/loupe.gif);
border-top-width: 1px;
border-right-width: 1px;
border-bottom-width: 1px;
border-left-width: 1px;
border-top-style: dotted;
border-right-style: dotted;
border-bottom-style: dotted;
border-left-style: dotted;
border-top-color: grey;
border-right-color: grey;
border-bottom-color: grey;
border-left-color: grey;
vertical-align: text-bottom;
}

#search label {
display: none;
}

#search h2, #search form {
display: inline;
}`

But i decided to modify code like this :

http://olivierbaudrydesign.free.fr/?page_id=9/
<div id="search">
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="get" name="searchform" id="searchform" />
<input type="text" name="s" id="s" value="Rechercher" maxlength="255" style="" onClick="this.value='';"onblur="if(this.value=='') this.value='Rechercher';" onfocus="if(this.value=='Rechercher') this.value='';" /></div>
<input type="image" alt="submit" src="/wp-content/themes/oupocreanum/images/return.gif"   />
</form>
</div>

But my purpose is to have two box one for searchform with picture on background and one for text But actually I don’t know,I search to have a separation between searchform background and searchform text like arte.tv search form http://www.arte.tv/fr/70.html

Can you help me for making good scripting or good css to have a good effect on text position?