#yoursearchbox {
}
#yoursearchbox input[type="text"] {
inhere goes the background image with the search glass plus all the layout for drawing of the inputbox
}
<div><form method="get" action="url of your website" id="yoursearchbox">
<input type="text" class="text_input" value="Recherche.." name="s" id="s" onfocus="if(this.value == 'Recherche..') {this.value = '';}" onblur="if (this.value == '') {this.value = 'Recherche..';}" /></form></div>
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