function look(type){
param=document.getElementById(type);
if(param.style.display == "none") param.style.display = "block";
else param.style.display = "none"
}

function look2(type){
	var param  = document.getElementById('opt'+type);
	var param2 = document.getElementById('pod'+type);
	if(param.style.display == "none")
	{
		param.style.display = "block";
		param2.style.display = "none";
	}
	else
	{
		param.style.display = "none";
		param2.style.display = "block";
	}

}