var flag = 0;
var timerID = null;

function get_brouse()
{
	if (navigator.appName == "Netscape")
	{
		return true;
	}
}
function menushow(menunum, obj_1, obj_2, obj_3, obj_4)
{
	if(flag==0)
	{
		clearTimeout(timerID);
		var elem_1 = document.getElementById(obj_1);
		elem_1.style.visibility = 'hidden';
		var elem_2 = document.getElementById(obj_2);
		elem_2.style.visibility = 'hidden';
		var elem_3 = document.getElementById(obj_3);
		elem_3.style.visibility = 'hidden';
		var elem_4 = document.getElementById(obj_4);
		elem_4.style.visibility = 'hidden';
		var currentmenu = document.getElementById(menunum);
		currentmenu.style.visibility = 'visible';
	}
	else
	{
		flag = 0;
		setTimeout("menushow("+menunum+")", 200);
	}
}

function menushow_cur(menunum, obj_1)
{
	if(flag==0)
	{
		clearTimeout(timerID);
		var elem_1 = document.getElementById(obj_1);
		elem_1.style.visibility = 'hidden';
		var currentmenu = document.getElementById(menunum);
		currentmenu.style.visibility = 'visible';
	}
	else
	{
		flag = 0;
		setTimeout("menushow("+menunum+")", 200);
	}
}

function menuhide(menunum)
{
	clearTimeout(timerID);
	var currentmenu = document.getElementById(menunum);
	currentmenu.style.visibility = 'hidden';
	flag = 0;
}


function smenu_hidden(id)
{
//	alert(id);
	timerID = window.setTimeout('menuhide("'+id+'")', 200);
}
function smenu_init()
{
	document.getElementById('menu_about').style.visibility = 'hidden';
	document.getElementById('menu_portfolio').style.visibility = 'hidden';
}

function img_init()
{
	document.getElementById('img_div_bg_forum').style.visibility = 'hidden';
	document.getElementById('img_div_bg_portfolio').style.visibility = 'hidden';
	document.getElementById('img_div_bg_customers').style.visibility = 'hidden';
	document.getElementById('img_div_bg_about').style.visibility = 'hidden';
	document.getElementById('img_div_bg_construction').style.visibility='visible';
	document.getElementById('img_div_bg_forum').style.top = parseInt(document.getElementById('img_div_bg_forum').offsetTop) - parseInt(document.getElementById('img_div_bg_forum').clientHeight) +'px';
	document.getElementById('img_div_bg_portfolio').style.top = parseInt(document.getElementById('img_div_bg_portfolio').offsetTop) - parseInt(document.getElementById('img_div_bg_portfolio').clientHeight) +'px';
	document.getElementById('img_div_bg_customers').style.top = parseInt(document.getElementById('img_div_bg_customers').offsetTop) - parseInt(document.getElementById('img_div_bg_customers').clientHeight) +'px';
	document.getElementById('img_div_bg_about').style.top = parseInt(document.getElementById('img_div_bg_about').offsetTop) - parseInt(document.getElementById('img_div_bg_about').clientHeight) +'px';
	document.getElementById('img_div_bg_construction').style.top = parseInt(document.getElementById('img_div_bg_construction').offsetTop) - parseInt(document.getElementById('img_div_bg_construction').clientHeight) +'px';
}