Check if raycast didn't hit a certain object

Hi I have this script:

var isHovering : boolean;
var ray : Ray = camera.main.ScreenPointToRay (Input.mousePosition);
var hit : RaycastHit;
if (Physics.Raycast (ray.origin, ray.direction, hit, 100)) 
{
	if(hit.collider.tag == "Item")
	{
		isHovering = true;
	}else if(hit.collider.tag == "Item"){
		isHovering = false;
	}
}

but when ever the script runs it flickers between true and false? What is the problem and how do I fix it?

Thanks

Your code should be more like this:

var isHovering : boolean;
var ray : Ray = camera.main.ScreenPointToRay (Input.mousePosition);
var hit : RaycastHit;
if (Physics.Raycast (ray.origin, ray.direction, hit, 100)) 
{
    // we hit something.. check the tag of the hit object
    if(hit.collider.tag == "Item")
    {
       // we hit our tag
       isHovering = true;
    }
    else
    {   
       // we didnt hit our tag.. we hit something else
       isHovering = false;
    }
 }
else
{
   // we didnt hit a thing
   isHovering = false;
}