checkbox counter

hello,
i need to make a page which counts the number of check box's ticket and print the result in a readony txt box which i can do with this totals() function

function Totals()
{
check=document.forms[0].check;
txt="";
for (i=0;i<check.length;++ i)
{
if (check[i].checked)
{
txt=txt + check[i].value + "";
}
}
document.getElementById("order").value="points " + txt.length;
}

however, i also need to make a separate readonly box which converts these number of points to a string
eg.
Total points:
6
Award:
bronze

heres what i have so far but this is completely wrong....

function Awards()
{

var medal =document.getElementById("award").value="points " + txt.length;


if(txt.lenth < 6){
document.getElementById("award").value="bronze";
}
if(medal < 9){
document.getElementById("award").value="silver";
}
if(medal < 12){
document.getElementById("award").value="gold";
}
}