function nxGetElementById(id)
{
	if (document.getElementById)
		return document.getElementById(id);
	else if (document.all)
		return document.all[id];
	else if (document.layers)
		return document[id];
	else
		return null;
}

function dateString() 
{
	var d = new Date();
	var s = d.toLocaleString();
	var re = /:[0-9]+$/;
	return s.replace(re, "");
}

function onTick()
{
	var clck = nxGetElementById("date");

	if (clck != null && clck.innerHTML)
		clck.innerHTML=dateString();

	window.setTimeout("onTick()",30*1000);
}

onTick();

function HideAndShow(VarTab){
	for (i=0; i <= 20; i++){
		var Val="Tab_"+i;
		var menu=document.getElementById(Val);
		if (menu!=null)
			if(VarTab == Val)
				document.getElementById(Val).style.display=""; 
			else  
				document.getElementById(Val).style.display="none";
	}   
}