Countdown Timer Help About putting 0's

Hello everyone, here is my countdown code :

var seconds =60; var a =0; var minutes = 14; var b = 0;

function Awake(){ a=1; }

function Update() {

GameObject.Find("Seconds").guiText.text =""+seconds; // says GUI TEXT called Seconds to put seconds on GameObject.Find("Minutes").guiText.text =""+minutes; // says GUI TEXT called Minutes to put minutes on

if(b==1) { CountdownMinutes(); }

if(a==1){ CountdownSeconds(); }

if(seconds == 0){ b = 1; } else { b=0; }

function CountdownSeconds(){ a=0; yield WaitForSeconds(1); seconds-=1; a=1; }

function CountdownMinutes() { b=0; minutes -=1; seconds = 60;

}

}

This is working quite well, but like this , there is 2 Gui text on the screen and starts like this :

14:59 like i wanted, but when the seconds get under 10, it's being like this:

14:5

but i want it to be like this 14:05 , i mean if it's under 10 i want it to put 0 near it,same thing for the minutes.

Any idea about doing this ?

Thanks.