function ecalc_conv1(id_el, id_imp, do_meny)
{
	var kurz = 30.126;
	var el = document.getElementById(id_el);
	var imp = document.getElementById(id_imp);
	var ret = 0;
	if ((el) && (imp)) {
		imp = imp.value;
		imp = imp.replace(',', '.');		
		imp = parseFloat(imp);
		if (imp) {
			var c2;
			var s1 = ' je ';
			//var s1 = '<br />=<br />';
			if (do_meny == 'sk') {
				ret = imp * kurz;
				c2 = ret;
				ret = ecalc_enc_num(imp) + ' &#8364;'+ s1 +'<b>'+ ecalc_enc_num(ret) + ' Sk</b>';
			} else {
				ret = imp / kurz;
				c2 = ret;
				ret = ecalc_enc_num(imp) + ' Sk'+ s1 +'<b>'+ ecalc_enc_num(ret) + ' &#8364;</b>';
			}
			if (ret) el.innerHTML = ret + '<br /><div style="visibility: hidden; height: 0px;"><img src="/exec/eurocalc.asp?sm='+ do_meny +'&c1='+ ecalc_enc_num(imp) +'&c2='+ ecalc_enc_num(c2) +'" style="width: 0px; height: 0px;" width="0" height="0" /></div>';
		} else {
			alert('Zle zadané číslo');
		}
	}
}

function ecalc_enc_num(n)
{
	var r = n.toFixed(2);
	r = r.replace('.', ',');
	if (r.indexOf(',00')>0) r = r.substring(0, r.length-3);
	return r;
}