var $$ = function (id) {
	return "string" == typeof id ? document.getElementById(id) : id;
};

function Tab(m,n,o,p,q) 
{
var ta=$$("left"+m).getElementsByTagName("a");
var mli=$$("main"+m).getElementsByTagName(q);
for(i=0;i<mli.length;i++)
{
ta[i].className=i==n?o:"none";
mli[i].style.display=i==n?"block":"none";
//alert(i==n?"block":"none")
}
}