function downloadP2D() {
	document.getElementById("p2dxtbutton").style.display = "none";
	document.getElementById("p2dxtText").style.display = "block";
}
 function submit_form() {
	 var re=/^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
	 var re1=/^[A-Za-z0-9]+$/;
	 if(document.getElementById("os0").value!=""&&document.getElementById("os1").value!=""){
		if(re.test(document.getElementById("os1").value)==false){
			alert('Plz input a right email, so we can track with you in customer service!');
			return false;
		}
		else if(re1.test(document.getElementById("os0").value)==false||document.getElementById("os0").value.length!=8){
			alert('Plz input a right PIN with 8 characters!');
			return false;
		}
		else{
			return true;
		}
	 }
	 else{
	 	alert('Pin or Email can not be empty!');
		return false;
	 }
}