function Go1(){
mad0=document.getElementById("pa0");
mad0.style.color="navy";
mad1=document.getElementById("pa1");
mad2=document.getElementById("pa2");
mad1.style.display="block";
mad1.value="";
mad2.value="";
mad2.style.display="none";
}
function Go2(){
mad1=document.getElementById("pa1");
mad2=document.getElementById("pa2");
mad1.style.display="none";
mad2.style.display="block";
mad2.style.color="#D20000";
mad2.focus();
}