function show(obj) { document.getElementById(obj).style.display = "block"; }
function hide(obj) { document.getElementById(obj).style.display = "none"; }

function fiz() {
	show("common");
	hide("pboul"); 
	hide("ur");
	show("foot"); 
}

function ur() { 
	show("common");
	hide("pboul"); 
	show("ur"); 
	show("foot");
}


function pboul() {
	show("common");
	show("pboul"); 
	hide("ur"); 
	show("foot");	
}

function orderstart() {
	show("common");
	hide("pboul"); 
	hide("ur");
	show("foot");
}