/* -------------------------------------------------------------------
 * 
 * Author: Blupixel IT Srl
 * Last Modifcation Date: 12nd June 2012
 * Website: www.blupixelit.eu
 * support at: webmaster@blupixelit.eu
 * 
 * Copyright (c) 2012 Blupixel IT Srl - Trento (Italy)
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * ----------------------------------------------------------------- */ 

 Applied to one or more image, the script animate a layer over the image
 by changing his dimensions on mouse over event and create a curtain effect.
 
 How To Use:
 
 - create div that contains the image or images in the form

    <div id="yourID">
	   <a href="yourlink"><img src="yourimage" width="immwidth" height="immheight"/></a>
	   ...
	   <a href="yourlink"><img src="yourimage" width="immwidth" height="immheight"/></a>
    </div>

 - then simply call the function name: 
    jQuery('#yourID').bITAnimateButton();
 - or use additional params: 
    jQuery('#yourID').bITAnimateButton({direction: left, finalWidth: 50});

 Possible Parameters:
 
 - finalHeight: number
     is the final height in pixel of the layer used to make the curtain effect
      direction 'top' or 'bottom'
 - finalWidth: number
      is the final width in pixel of the layer used to make the curtain effect
      direction 'left' or 'right'
 - direction: 'top' | 'left' | 'right' | 'bottom'
      is the direction fo the sliding effect
 - layerColor: color
	  is the color of the layer used to make images curtain effect
 - layerOpacity: number
      is the value of the opacity of the layer used to make the curtain effect
 - animationSpeed: number
      is the number of millisecond to use to complete the slide effect
 - onReduceComplete: function
		 is the function loaded when the layer used to make the curtain effect is reduced
 - onEnlargeComplete: function
		 is the function loaded when the layer used to make the curtain effect is enlarged