help with .toFixed(2)

[stylishjm]

Basically Im using parsefloat to help add a certain amount to a variable passed on from another page, but now instead of it appearing as 45.50, it appears as 45.5.

var pay=50,res;
     
     document.getElementById("3").innerHTML = p[1];
     document.getElementById("77").innerHTML = p[1];
     document.getElementById('77').value = document.getElementById('3').innerHTML;
     document.getElementById('4').value = document.getElementById('77').innerHTML;
     document.getElementById('5').value = document.getElementById('77').innerHTML;

     
     document.getElementById("3").innerHTML = p[1].replace('+', ' ').replace('%C2%A3', '£').replace(' UK', ' ');
     document.getElementById("77").innerHTML = p[1].replace('+', ' ').replace('%C2%A3', '£').replace(' UK', ' ');
     document.getElementById("4").innerHTML = parseFloat(p[1]) + 5;
     res = parseFloat(p[1])*( pay / 100);
     document.getElementById("5").innerHTML = parseFloat(p[1]) + res;

Basically I need to have "5" and "4" to be displayed to 2 decimal places. Ive tried using toFixed(2) but i cant seem to get it to work.
Also before anyone mentions, I know the site fails to function as it should on google chrome and some other browsers and Im working on that :)

[Dormilich]

worked when I tried toFixed().

[stylishjm]

Where would I put to.fixed though?
Thanks

[Dormilich]

(parseFloat(p[1]) + res).toFixed(2);