Health bar: Death at 0 percent.

Below is my script for a health and mana bar. How can I make it so that when the health bar is completely depleted, the scene begins again(application.loadlevel)?

static var curHp : float = 300.0;
static var maxHp : float = 300.0;

static var curMana : float = 50.0;
static var maxMana : float = 50.0;

var HpBarTexture : Texture2D;
var ManaBarTexture : Texture2D;

var hpBarLength : float;
var percentOfHp : float;

var manaBarLength : float;
var percentOfMana :float;

function OnGUI () {

if (curHp > 0)
{
    GUI.DrawTexture(Rect((Screen.width/2) - 100, 10, hpBarLength, 10), HpBarTexture);
   
}

if (curMana > 0)
{
    GUI.DrawTexture(Rect((Screen.width/2) - 100, 20, manaBarLength, 10), ManaBarTexture);
   
}

}

function Update () {

percentOfHP = curHp/maxHp;
hpBarLength = percentOfHP*100;

percentOfMana = curMana/maxMana;
manaBarLength = percentOfMana*100;

if(Input.GetKeyDown(“h”)) {

curHp -= 10.0;

}

if(Input.GetKeyDown(“m”)) {

curMana -= 10.0;

}

Hi,

function Update(){
    if(curHp <= 0){
        //Whatever you want
    }
}