function refresh_din() {
var sel_val1 = document.form1.val1.value;
document.form1.curr1.value = valute_key[sel_val1];
}
function refresh_in() {
var sel_val2 = document.form1.val2.value;
document.form1.curr2.value = valute_key[sel_val2];
}


function show_sum() {
var sel_val1 = document.form1.val1.value;
var sel_val2 = document.form1.val2.value;
var valuta_sum = 1;
var valuta_din = 0;
var valuta_in = 1;
var ccc = 0;
var valuta_sum = parseFloat(document.form1.sum.value);
document.form1.total.value='';   
var valuta_din = parseFloat(valute_value[sel_val1]);
var valuta_in = parseFloat(valute_value[sel_val2]);


valuta_gen= valuta_sum*valuta_din/valuta_in;


if (valuta_sum*1 == 0) {document.form1.total.value = "";  document.form1.sum.focus();  }
 
else {  

	if (isNaN(valuta_gen) || (valuta_gen*1==0)) { document.form1.total.value=0; } 
	else {
	zecimale = ((Math.round (valuta_gen*Math.pow(10, 5)))/(Math.pow(10, 5))).toString();}


	document.form1.total.value=zecimale;

	}


}


function getkey(e)
{
if (window.event)
   return window.event.keyCode;
else if (e)
   return e.which;
else
   return null;
}


function filter_keyb(e, filtered)
{
var key, keychar;
key = getkey(e);
if (key == null) return true;


keychar = String.fromCharCode(key);
keychar = keychar.toLowerCase();
filtered = filtered.toLowerCase();

if (filtered.indexOf(keychar) != -1)
	return true;


if ( key==null || key==0 || key==8 || key==9 || key==13 || key==27 )
   return true;

return false;
}