remplace dropdown store menu by flag

new_store.phtml

<?php if(count($this->getGroups())>1): ?>
<div class="store-switcher">
    <?php foreach ($this->getGroups() as $_group): ?>
    <a href="<?php echo $_group->getHomeUrl() ?>"><img
src="<?php echo $this->getSkinUrl('images/store/store_' . strtolower(str_replace(' ', '_',$this->htmlEscape($_group->getName()))) . '.png') ?>" width="30" height="20"
alt="<?php echo $this->htmlEscape($_group->getName()) ?>"/></a>
    <?php endforeach; ?>
</div>
<?php endif; ?>

old_store.phtml

<?php if(count($this->getGroups())>1): ?>
<div class="store-switcher">
    <label for="select-store"><?php echo $this->__('Select Store:') ?></label>
    <select id="select-store" title="<?php echo $this->__('Select Store') ?>" onchange="location.href=this.value">
    <?php /*foreach ($this->getStores() as $_store): ?>
        <option value="<?php echo $_store->getUrl('') ?>"<?php if($_store->getId()==$this->getCurrentStoreId()): ?> selected="selected"<?php endif; ?>><?php echo $_store->getName() ?></option>
    <?php endforeach;*/ ?>
    <?php foreach ($this->getGroups() as $_group): ?>
        <?php $_selected = ($_group->getId()==$this->getCurrentGroupId()) ? ' selected="selected"' : '' ?>
        <option value="<?php echo $_group->getHomeUrl() ?>"<?php echo $_selected ?>><?php echo $this->htmlEscape($_group->getName()) ?></option>
    <?php endforeach; ?>
    </select>
</div>
<?php endif; ?>