var div_visivility = new Array();
	div_visivility[0] = 0;
	div_visivility[1] = 0;
	div_visivility[2] = 0;
	div_visivility[3] = 0;
	
function show_div(val){
	div_name = 'submenu_div_' + val;
	obj = document.getElementById(div_name);	
	obj.style.visibility = "visible";
	div_visivility[val] = 1;
}
function hide_div(val){
	div_visivility[val] = 0;
	setTimeout('close_div('+val+')', 1000);
}
function close_div(val){
	if (div_visivility[val] != 1){
		div_name = 'submenu_div_' + val;
		obj = document.getElementById(div_name);	
		obj.style.visibility = "hidden";
	}
}