function get_post_code()
{
	frm = document.forms.order;
    var reg='-1';
    var loc='-1';
    var street = replace_lith_symbols(frm["invadr[oxuser__oxstreet]"].value);
	var place = replace_lith_symbols(frm["invadr[oxuser__oxcity]"].value);
    var house_no = parseInt(frm["invadr[oxuser__oxstreetnr]"].value);
	window.open("http://www.post.lt/lt/?id=848&search_kodo_tipas=-1&w=1200000000000&search=on&page=0&search_apskritis="+escape(reg)+"&search_savivaldybe="+escape(loc)+"&search_vietove="+escape(place)+"&search_gatve="+escape(street)+"&search_namas="+escape(house_no));
	return false;
}

function replace_lith_symbols(str)
{
	var from = "ÀÈÆËÁÐØÛÞàèæëáðøûþ";
	var to   = "ACEEISUUZaceeisuuz";
	for (i = 0; i < from.length; i++)
	{
		r = new RegExp(from.substring(i, i + 1), "g");
		str = str.replace(r, to.substring(i, i + 1));
	}
	return str;
}

function isset(  ) {
    var a=arguments; var l=a.length; var i=0;
    if (l==0) { 
        throw new Error('Empty isset'); 
    }

    while (i!=l) {
        if (typeof(a[i])=='undefined' || a[i]===null) { 
            return false; 
        } else { 
            i++; 
        }
    }
    return true;
}