var g_obj_image         = null;  // list of images
var g_obj_imagePreload  = 0;     // preload the images cache
var g_i_num             = 0;     // variable that will increment through the images
var g_i_timeDelay       = 0;     // set the delay between images

function ImageEffects()
{
	if(g_b_isIE)
      {
		var obj_slideShowImage = document.getElementById('slideShowImage');

		if(obj_slideShowImage)
		{
     			obj_slideShowImage.filters.revealTrans.Transition = 14;
     			obj_slideShowImage.filters.revealTrans.apply();
     			obj_slideShowImage.filters.revealTrans.play();
		}
	}
}

function ShowImage(origin)
{ 
	var nextImage          = 1;
	var obj_slideShowImage = document.getElementById("slideShowImage");

	if(origin == nextImage)
	{
		if(g_i_num < g_obj_image.length)
    		{
       		g_i_num++;

      		// if last image is reached, display the first image
       		if(g_i_num == g_obj_image.length) 
       		{
				g_i_num = 0;
			}

			ImageEffects();
       		obj_slideShowImage.src = g_obj_image[g_i_num]   
    		}
	}
	else
	{
		if(g_i_num > 0)
    		{
      	 	g_i_num--;
			ImageEffects();
       		obj_slideShowImage.src = g_obj_image[g_i_num];
     		}
		else
    		{
       		g_i_num = g_obj_image.length;
			g_i_num--;
			ImageEffects();
       		obj_slideShowImage.src = g_obj_image[g_i_num];
   		}
	}
}