function _fnDeleteIndex( a, iTarget, splice )
	{
		var iTargetIndex = -1;
	
		for ( var i=0, iLen=a.length ; i<iLen ; i++ )
		{
			if ( a[i] == iTarget )
			{
				iTargetIndex = i;
			}
			else if ( a[i] > iTarget )
			{
				a[i]--;
			}
		}
	
		if ( iTargetIndex != -1 && splice === undefined )
		{
			a.splice( iTargetIndex, 1 );
		}
	}
Take an array of integers (index array) and remove a target integer (value - not
the key!)
 @param {array} a Index array to target
 @param {int} iTarget value to find
 @memberof DataTable#oApi