WPtouch switch for Quick Cache.

function.php

/**
 * WPtouch switch for Quick Cache
 * - WPtouch 1.9.6.1
 * - Ktai Style 2.0.5
 * - Quick Cache 111203
 *
 * Quick Cache MD5 Version Salt (smartphone, featurephone)
 * ((preg_match("{AdsBot-Google|Android|BB10|BlackBerry 9350|BlackBerry 9360|BlackBerry 9370|BlackBerry 9380|BlackBerry 9780|BlackBerry 9790|BlackBerry 9800|BlackBerry 9810|BlackBerry 9850|BlackBerry 9860|BlackBerry 9900|BlackBerry 9930|BlackBerry9500|BlackBerry9520|BlackBerry9530|BlackBerry9550|CUPCAKE|Googlebot-Mobile|bada|dream|froyo|iPhone|iPod|incognito|s8000|webOS|webmate}", $_SERVER["HTTP_USER_AGENT"])) && $_COOKIE["wptouch_switch_toggle"] != "normal" ? "smartphone" : ((preg_match("{DoCoMo/|J-PHONE/|J-EMULATOR/|Vodafone/|MOT(EMULATOR)?-|SoftBank/|[VS]emulator/|KDDI-|UP\.Browser/|emobile/|Huawei/|IAC/|Nokia|mixi-mobile-converter/|DDIPOCKET;|WILLCOM;|Opera Mini|Opera Mobi|PalmOS|Windows CE;|PDA; SL-|PlayStation Portable;|SONY/COM|Nitro|Nintendo}", $_SERVER["HTTP_USER_AGENT"])) ? "featurephone" : ""))
 *
 * @todo add this program to theme function.php
 */
if (isset($GLOBALS['wptouch_plugin'])) {
	function wptouch_switch_script() {
		echo "<script type='text/javascript'>";
		echo "if (window.navigator.userAgent.match(/(AdsBot-Google|Android|BB10|BlackBerry 9350|BlackBerry 9360|BlackBerry 9370|BlackBerry 9380|BlackBerry 9780|BlackBerry 9790|BlackBerry 9800|BlackBerry 9810|BlackBerry 9850|BlackBerry 9860|BlackBerry 9900|BlackBerry 9930|BlackBerry9500|BlackBerry9520|BlackBerry9530|BlackBerry9550|CUPCAKE|Googlebot-Mobile|bada|dream|froyo|iPhone|iPod|incognito|s8000|webOS|webmate)/)) {";
		// Load stylesheet
		echo "var link = document.createElement('link');";
		echo "link.rel = 'stylesheet';";
		echo "link.href = '" . WP_PLUGIN_URL . "/wptouch/themes/core/core-css/wptouch-switch-link.css';";
		echo "link.type = 'text/css';";
		echo "link.media = 'screen';";
		echo "document.getElementsByTagName('head')[0].appendChild(link);";
		// Render switch (same as wptouch_switch() in wptouch.php)
		echo "document.write(\"";
		echo "<div id='switch'>";
		_e( "Mobile Theme", "wptouch" );
		echo "<div>";
		echo "<a id='switch-link' onclick=\\\"var addActive = document.getElementById('switch-on'); addActive.className = addActive.className + ' active';var removeActive = document.getElementById('switch-off'); removeActive.className = ' ';\\\" href='" . home_url() . "/?wptouch_view=mobile&wptouch_redirect_nonce=" . wp_create_nonce( 'wptouch_redirect' ) . "&wptouch_redirect=" . urlencode( $_SERVER['REQUEST_URI'] ) . "'>";
		echo "<span id='switch-on'>ON</span>";
		echo "<span id='switch-off' class='active'>OFF</span>";
		echo "</a>";
		echo "</div></div>";
		echo "\");}</script>\n";
	}
	// Substitute the original stylesheet in header and mobile switch in footer
	remove_filter( 'wp_head', array($GLOBALS['wptouch_plugin'], 'bnc_head') );
	remove_action( 'wp_footer', 'wptouch_switch' );
	add_action( 'wp_footer', 'wptouch_switch_script' );
}