Finding the GuiTexture of an object

I need to find the GuiTexture connected to the child of “var closest” and return it to “var myGui”.
Any ideas?

My starting point:

var closest : Transform;

var myGui : GUITexture;
.....
   
 function Update () {  
                   myGui = GameObject.Find("Target_enemy").guiTexture; 
}

var myObject : GameObject
var myGui : GUITexture;

function Update () {  
    myObject = GameObject.Find("Target_enemy");
    if (myGui)
    {
       myGui = myObject.GetComponet(GUITexture);
    } 
}