An object reference is required to access non-static member

I have a error when i have some code: here is it:

using UnityEngine;
using System.Collections;

public class CollisionPlayer : MonoBehaviour {

void Start(){

	IfLoose ifloose = GetComponent<IfLoose> ();

	if (Input.GetKeyDown("space"))
		IfLoose.StartLooseGame ();
}

}

I am trying to access a public void from another script but it is not working? Any ideas?

Casing error, Ifloose (class) instead of ifloose (instance)

void Start(){
 
     IfLoose ifloose = GetComponent<IfLoose> ();
 
     if (Input.GetKeyDown("space"))
         ifloose.StartLooseGame ();
 }