function divSlider(img_id)
{
	if(document.getElementById(img_id).getAttribute('src') =="img/index/slide_square_dark_gray.png")
	{		
		var i=1;
		for (i=1;i<=10;i++)
		{
			var slideshow_square = "slideshow_square_"+i;
			var slide = "slide_"+i;
			if(slideshow_square != img_id)
			{
				document.getElementById(slideshow_square).setAttribute('src', 'img/index/slide_square_dark_gray.png'); 
				document.getElementById(slide).setAttribute('style', 'display:none'); 
			}
			else
			{
				document.getElementById(slideshow_square).setAttribute('src','img/index/slide_square_light_gray.png');
				document.getElementById(slide).setAttribute('style', 'display:block'); 				
			}
		}
	}
}