function   fixTo(s,i){   
  if   (s==null   ||   s==""   ||   isNaN(s)   ||   Math.round(s)==0)   return   0;   
  i   =   Math.round(i);   
  if   (i==0)   return   Math.round(s);   
  if   (i==null   ||   isNaN(i)   ||   i<0)   i=2;   
  var   v   =   Math.round(s*Math.pow(10,i)).toString();   
  if   (/e/i.test(v))   return   s;   
  return   v.substr(0,v.length-i)+"."+v.substr(v.length-i);   
  }   

function login(){

var username=document.getElementById("username").value;
var pass=document.getElementById("pass").value;
window.location.href='servlet/buyerLogin?username='+username+'&pass='+pass;

}

function changeText1(){
username.value="";

}

function changeText2(){

pass.value="";
}