function fallout(tab)
{
	if(eval("document.getElementById('tab_" + tab + "').style.display") == "none")
	{
		eval("document.getElementById('tab_" + tab + "').style.display = 'block'");
		eval("document.getElementById('img_" + tab + "').src = '/lib/img/arrow_red_down.gif'");
	}
	else
	{
		eval("document.getElementById('tab_" + tab + "').style.display = 'none'");
		eval("document.getElementById('img_" + tab + "').src = '/lib/img/arrow_red_right.gif'");
	}
}

function isEmail(sEmail)
{
	var re = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
	if(!re.test(sEmail))
	{
		alert("E-postadressen är felaktig!\nVar god ange en korrekt e-postadress.");
	}
	return(re.test(sEmail));
}

function openwin(url, name, width, height)
{
	//center the window on the screen
	var w = 480, h = 340;
	
	w = screen.availWidth; //document.body.clientWidth;
	h = screen.availHeight; //document.body.clientHeight;

	var leftPos = (w-width)/2, topPos = (h-height)/2;
	
	msgWindow = open(url, name,'menubar=0,status=0,scrollbars=1,resizable=1,toolbar=0,location=0,width=' + width + ',height=' + height + ',top=' + topPos + ',left=' + leftPos);
	msgWindow.focus;
	return msgWindow;
}