function add_feature(feature_id,setup,year)
{
	if(feature_id.checked)
	{
		feature_id.form.Setup.value=parseFloat(feature_id.form.Setup.value)+parseFloat(setup);
		feature_id.form.Total.value=parseFloat(feature_id.form.Total.value)+parseFloat(year);
	}
else
	{
		feature_id.form.Setup.value=parseFloat(feature_id.form.Setup.value)-parseFloat(setup);
		feature_id.form.Total.value=parseFloat(feature_id.form.Total.value)-parseFloat(year);
	}
}

function bpressed(el,btn)
{
	el.form.submitted.value=btn;
}

function popup(url, name, ads) 
{	
		window.open(url, name, ads);
}