function zhuan()
{
var x=document.getElementById('deng1').value;
var y=document.getElementById('deng2').value;
var z=document.getElementById('deng3').value;
var jy=120*x*x*x+parseInt(y*0.2)+parseInt(z*0.02);
if (jy>1000000000)
{
document.getElementById('zhuanmenp1').value=1000000000;
}
else
{
document.getElementById('zhuanmenp1').value=jy;
}
}