Sprite Animation

So I have this script that isn't working the way I want it to and I don't know why. I'm trying to make a script that offsets the sprite texture for an animation effect, but instead of activating every 1 second (that's what the "time" variable is set to) it waits a seconds then activates uncontrollably.

 var time : float; // this is set to 1 btw
 
 function Update(){
     //if D is pressed
     if(Input.GetAxis("left/right") < 0 && !IsInvoking("Animate")){
         Invoke("AnimateRight", time);
     }
 }
 
 function AnimateRight(){
     //change back to zero to avoid sloppyness
     if(renderer.material.mainTextureOffset.x >= 0.8){
         renderer.material.mainTextureOffset.x = 0.0;
     }
     //increase offset
     else{
         renderer.material.mainTextureOffset.x += 0.1;
     }
 }

Can someone help? Thanks.