var tar=new Array();
tar[1]=0;
tar[1]=0;


function sho(a)
{
	document.getElementById("main_menu").className="main_menu_a";
	document.getElementById("submenu").style.display="block";
	tar[a]="1";
}

function hid(a)
{
	if ((tar[1]==0) | (a==1))
	{
		document.getElementById("main_menu").className="main_menu";
		document.getElementById("submenu").style.display="none";
	}
	
	tar[a]=0;
	
}

function filt(a)
{
	document.getElementById("filter").value=a;
	document.getElementById("filterez").submit();
}