Plugin on Iphone, Ipad and Androïd

<plugin name="btn_presentation" align="center" url="skin/images/presentation.png" crop= "0|0|900|270" onovercrop= "0|300|900|270"  x="710" y="-100" scale="0.2" handcursor="true" onclick="displayPresentation();" />		  <plugin name="textePresentation"  url="skin/images/textecommercial.png" alpha="1" origin="mid" width="65%" height="prop" visible="false" keep="true" onhover="showtext(Cliquer pour fermer);" onclick="closePresentation();" />		 <action name="displayPresentation">      set(plugin[textePresentation].visible,true);      set(plugin[btn_presentation].onclick,closePresentation();)          </action>        <action name="closePresentation">      set(plugin[textePresentation].visible,false);      set(plugin[btn_presentation].onclick,displayPresentation();)            </action>					<plugin name="realisations" align="center" url="skin/images/realisations.png" crop= "0|0|900|270" devices="" onovercrop= "0|300|900|270"  x="700" y="-40" scale="0.2" onclick="openurl(file:///Users/jean-michel/Desktop/REALISATIONS/REALISATIONS.html, target); stopallsounds()" />				<plugin name="contact" align="center" url="skin/images/contact.png" crop= "0|0|900|270" onovercrop= "0|300|900|270"  x="690" y="20" scale="0.2" onclick=""/>