function Img(Id,Event)
{
var img = document.getElementById(Id);
	if(Event == 'Over')
	img.src = 'images/'+Id+'_rollover.gif';
	else if(Event == 'Out')
	img.src = 'images/'+Id+'.gif';
	else
	img.src = 'images/'+Event;
}

function SubMenu(e)
{
var m = document.getElementById('products_submenu');
	if(e > 0)
	m.style.visibility = 'visible';
	else
	m.style.visibility = 'hidden';
}

function Show(id)
{
var layer = document.getElementById(id);
layer.style.display = 'block';
}

function Hide(id)
{
var layer = document.getElementById(id);
layer.style.display = 'none';
}

function doMail(acc)
{
var at = '@';
location.href='ma'+'ilt'+'o:'+acc+at+'netsense.bg';
}

function checkMail()
{
var email = document.form.email.value, filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if(filter.test(email))
	return true;
	else
	return false;
}

function Feedback()
{
var f = document.form;
	if(f.name.value < 1)
	f.name.focus();
	else if(checkMail() == false)
	f.email.focus();
	else if(f.subject.value < 1)
	f.subject.focus();
	else if(f.message.value < 1)
	f.message.focus();
	else
	{
	f.submit();
	document.getElementById('feedback').style.display = 'none';
	document.getElementById('feedback_sending').style.display = 'block';
	}
}

function Multimedia(f,w,h)
{
var l = (screen.availWidth - w) / 2;
var t = (screen.availHeight - h) / 2;
var scroll = (l<0||t<0) ? 'yes' : 'no';
l = (l<0) ? 0 : l;
t = (t<0) ? 0 : t;
window.open(f,'','scrollbars='+scroll+',width='+w+',height='+h+',top='+t+',left='+l);
}