function setLang(lg)
{
	var expdate=new Date();
	expdate.setTime( expdate.getTime() + 2*365*24*60*60*1000 );
	document.cookie='lang='+lg+'; expires='+expdate.toGMTString()+'; path=/';
	//alert(document.cookie);
}

String.prototype.trim=function()
{
        return this.replace(/^\s*|\s*$/g, '');
}

function is_empty(tf) 
{
	tf.value=tf.value.trim();
	
	if(tf.value.length==0 || tf.value==null)
		return true;

	return false;
}	

function check_email(a_email, a_msg)
{
	var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;

	a_email.value=a_email.value.trim();
	if (!filter.test(a_email.value))
	{
		alert(a_msg);
		return false;
	}

	return true;
}

function check_nagradna(form, errmsg1, errmsg2)
{
	if(is_empty(form.odgovor) ||  is_empty(form.ime) || is_empty(form.email) )
	{
		alert(errmsg1);
		return false;
	}

	if(!check_email(form.email, errmsg2))
	{
		return false;
	}

	return true;
}

function open_donacija(a_url)
{
	var win=window.open(a_url, 'donacija', 'width=640, height=500, resizable=yes, scrollbars=yes, location=yes, toolbar=no, menubar=no, status=yes');
	win.focus();
}


var g_win_nagradna=null;
function open_nagradna(a_form)
{
	var url=a_form.action;
	url+='?';
	url+='odgovor='+a_form.odgovor.value;
	url+='&ime='+a_form.ime.value;
	url+='&email='+a_form.email.value;

	if(g_win_nagradna && typeof(g_win_nagradna.closed)!='undefined' && !g_win_nagradna.closed) 
		g_win_nagradna.close();

	g_win_nagradna=window.open(url, a_form.target, 'width=572, height=250, resizable=yes, scrollbars=yes, location=no, toolbar=no, menubar=no');
	g_win_nagradna.focus();
}


var g_win_anketa=null;
function open_anketa(a_form)
{
	var url=a_form.action;
	url+='?';
	url+='stage='+a_form.stage.value;
	url+='&poll='+a_form.poll.value;
	url+='&avote='+a_form.avote.value;

	for(var i=0; i<a_form.option.length; i++)
	{
		if(a_form.option[i].checked)
		{
			url+='&option='+a_form.option[i].value;
			break;
		}
	}

/*
	if(a_form.avote.value==1)
	{
		url+='&btnVote='+a_form.btnVote.value;
	}
	else
	{
		url+='&btnResults='+a_form.btnResults.value;
	}
*/
	if(g_win_anketa && typeof(g_win_anketa.closed)!='undefined' && !g_win_anketa.closed) 
		g_win_anketa.close();

	g_win_anketa=window.open(url, a_form.target, 'width=572, height=540, resizable=yes, scrollbars=yes, location=no, toolbar=no, menubar=no');
	g_win_anketa.focus();
}


function set_vote(a_vote)
{
	var inpt=document.getElementById('avote');
	if(typeof(inpt)=='undefined')
	{
		//alert('avote');
		return false;
	}
	
	inpt.value=a_vote;

	return true;
}

function open_image(url)
{
	var win=window.open(url, 'pzpopup', 'resizable=yes, scrollbars=yes, location=yes, toolbar=no, menubar=yes, status=yes');
	win.focus();
	return true;
}

function open_popup(a_url, a_height)
{
	if(typeof(a_height)=='undefined' || a_height<200) a_height=540;

	//alert('open_popup height=('+a_height+')');
	var win=window.open(a_url.href, a_url.target, 'width=572, height='+a_height+', resizable=yes, scrollbars=yes, location=no, toolbar=no, menubar=no, status=no');
	win.focus();
	return true;
}