GUITexture Click

Im making a simple macro bar.. Im trying to access my function from my other Javascript file but cant seem to, heres my code. var normalTex : Texture2D; var hoverTex : Texture2D; var script : PlayerRelativeControl;

 function OnMouseEnter(){
 guiTexture.texture = hoverTex;
 
 }
 
 function OnMouseExit() {
 guiTexture.texture = normalTex;
 }
 
 function OnMouseDown(){
 script = GetComponent("PlayerRelativeControl");
 script.StopCoroutine("Slap");
 script.StartCoroutine("Slap");
 
 }