window.onorientationchange = function() {
	var orientation = window.orientation;
	//document.getElementById("testOrientation").setAttribute("value", orientation);
	document.getElementsByName("viewport")[0].setAttribute("content", "", "false");
	switch(orientation) {
		case 0:
			document.getElementsByName("viewport")[0].setAttribute("content", "initial-scale=0.65, minimum-scale=0.65, maximum-scale=0.6667, width=480, user-scalable=yes, height=320", false);
			//document.getElementsByName("viewport")[0].setAttribute("content", "minimum-scale=1.0, maximum-scale=1.1, width=480, user-scalable=yes, height=320", "false");
			break; 
		/*case 90: 
			//document.getElementsByName("viewport")[0].setAttribute("content", "initial-scale=0.25, minimum-scale=0.25, user-scalable=no, width=480, maximum-scale=0.6666, height=device-height", false);
			document.getElementsByName("viewport")[0].setAttribute("content", "width=480, minimum-scale=0.65, maximum-scale=0.6666, height=320", "false");
			/*var aContent = document.getElementsByName("viewport")[0].getAttribute("content");
			alert(aContent);*/
			//break;
		/*case -90:  
			document.getElementsByName("viewport")[0].setAttribute("content", "width=480, minimum-scale=0.65, maximum-scale=0.6666, height=320", "false");
			//document.getElementsByName("viewport")[0].setAttribute("content", "initial-scale=0.25, minimum-scale=0.25, user-scalable=no, width=480, maximum-scale=0.6666, height=device-height", false);
			break;*/
	}   
}