Náhrada select option - input text

function createArray(size) {
for (var i=0; i < size; i++) {
this[i] = null }
this.length = size;
return this
}
function Product(descrip, money) {
this.description = descrip;
this.cena = money;
}

var items = new Object();
color1 = "tan";
color2 = "khaki";

items[1] = new Product("Produkt 1 název", 25.50);
items[2] = new Product("Produkt 2 název", 39.95);
items[3] = new Product("Produkt 3 název", 5.23);
items[4] = new Product("Produkt 4 název", 13);

function SetLengths() {
var k=1;
while(items[k] != null) k++;
items.length = k;
}
SetLengths();

function writeSelect(num) {
// you can change the values in each quantity pop-up menu
// by changing the values in the options array below
leng = 10;
options = new createArray(leng);
options[0] = 0;
options[1] = 1;
options[2] = 2;
options[3] = 3;
options[4] = 4;
options[5] = 5;
options[6] = 6;
options[7] = 7;
options[8] = 8;
options[9] = 9;

html_code = "";

html_code += '<select size=1 name="pocet'+num+'" '
+ 'onChange="update(' + num + ')">';
for (o=0;o<leng;o++)
html_code += '<option value="'+options[o]+'"'
+ ((o==0) ? ' selected>':'>') + options[o];
html_code += '</select>';
return html_code;
}

function writeTableRow(i) {
document.write('<TR><TD><INPUT type=checkbox name="vyber' + i
+ '" onClick="update(' + i + ')">' + items[i].description
+ ' - KČ ' + fix(items[i].cena) + '</td>'
+ '<TD valign=bottom><INPUT type="text" value="0.00" name="cena' + i + '" '
+ 'size=12 maxlength=12 onFocus="document.form1.cena' + i + '.blur()">'
+ '</td><TD valign=bottom>' + writeSelect(i) + '</td></tr>');
}

function writeTable() {
document.write('<table cellspacing=8 cellpadding=0 border=0>'
+ '<TR><TD><B>Položky:</B></TD><TD></TD><TD><B>Kusů</B></TD></TR>');
for (i=1; i<items.length; i++)
writeTableRow(i);
document.write('<TR><TD align=right>Celkem: </td><TD><INPUT type="text" '
+ 'name="celkem" size=12 maxlength=12 value="0.00"></td></tr></table>');
}

function update(num) {
eval('q_selected = document.form1.pocet' + num + '.selectedIndex;');
eval('quant = document.form1.pocet' + num + '.options[q_selected].value;');
if (eval('document.form1.vyber' + num + '.checked'))
cost = fix(items[num].cena * quant);
else
cost = fix(0);
eval('document.form1.cena' + num + '.value = cost;');
var grand_total = 0;
for (i=1; i<items.length; i++)
eval('grand_total += parseFloat(document.form1.cena' + i + '.value);');
document.form1.celkem.value = fix(grand_total);
}

function fix(num) {
string = "" + num;
if (string.indexOf('.') == -1)
return string + '.00';
seperation = string.length - string.indexOf('.');
if (seperation > 3)
return string.substring(0,string.length-seperation+3);
else if (seperation == 2)
return string + '0';
return string;
}