var start = true;
var current = 0;

var subpics = new Array(4);
subpics[0] = 1;
subpics[1] = 2;
subpics[2] = 3;
subpics[3] = 4;
var offset = 0;

var pics = new Array(14);
pics[0] = 'slideshow_images/img1.jpg';
pics[1] = 'slideshow_images/img2.jpg';
pics[2] = 'slideshow_images/img3.jpg';
pics[3] = 'slideshow_images/img4.jpg';
pics[4] = 'slideshow_images/img5.jpg';
pics[5] = 'slideshow_images/img6.jpg';
pics[6] = 'slideshow_images/img7.jpg';
pics[7] = 'slideshow_images/img8.jpg';
pics[8] = 'slideshow_images/img9.jpg';
pics[9] = 'slideshow_images/img10.jpg';
pics[10] = 'slideshow_images/img11.jpg';
pics[11] = 'slideshow_images/img12.jpg';
pics[12] = 'slideshow_images/img13.jpg';
pics[13] = 'slideshow_images/img14.jpg';
pics[14] = 'slideshow_images/img15.jpg';
pics[15] = 'slideshow_images/img16.jpg';
pics[16] = 'slideshow_images/img17.jpg';
pics[17] = 'slideshow_images/img18.jpg';
pics[18] = 'slideshow_images/img19.jpg';
pics[19] = 'slideshow_images/img20.jpg';
pics[20] = 'slideshow_images/img21.jpg';
pics[21] = 'slideshow_images/img22.jpg';
pics[22] = 'slideshow_images/img23.jpg';
pics[23] = 'slideshow_images/img24.jpg';
pics[24] = 'slideshow_images/img25.jpg';
pics[25] = 'slideshow_images/img26.jpg';
pics[26] = 'slideshow_images/img27.jpg';
pics[27] = 'slideshow_images/img28.jpg';
pics[28] = 'slideshow_images/img29.jpg';
pics[29] = 'slideshow_images/img30.jpg';
pics[30] = 'slideshow_images/img31.jpg';
pics[31] = 'slideshow_images/img32.jpg';
pics[32] = 'slideshow_images/img33.jpg';
pics[33] = 'slideshow_images/img34.jpg';
pics[34] = 'slideshow_images/img35.jpg';
pics[35] = 'slideshow_images/img36.jpg';
pics[36] = 'slideshow_images/img37.jpg';
pics[37] = 'slideshow_images/img38.jpg';
pics[38] = 'slideshow_images/img39.jpg';
pics[39] = 'slideshow_images/img40.jpg';
pics[40] = 'slideshow_images/img41.jpg';
pics[41] = 'slideshow_images/img42.jpg';
pics[42] = 'slideshow_images/img43.jpg';
pics[43] = 'slideshow_images/img44.jpg';
pics[44] = 'slideshow_images/img45.jpg';
pics[45] = 'slideshow_images/img46.jpg';
pics[46] = 'slideshow_images/img47.jpg';
pics[47] = 'slideshow_images/img48.jpg';
pics[48] = 'slideshow_images/img49.jpg';
pics[49] = 'slideshow_images/img50.jpg';
pics[50] = 'slideshow_images/img51.jpg';
pics[51] = 'slideshow_images/img52.jpg';
pics[52] = 'slideshow_images/img53.jpg';
pics[53] = 'slideshow_images/img54.jpg';
pics[54] = 'slideshow_images/img55.jpg';
pics[55] = 'slideshow_images/img56.jpg';
pics[56] = 'slideshow_images/img57.jpg';
pics[57] = 'slideshow_images/img58.jpg';
pics[58] = 'slideshow_images/img59.jpg';
pics[59] = 'slideshow_images/img60.jpg';
pics[60] = 'slideshow_images/img61.jpg';
pics[61] = 'slideshow_images/img62.jpg';
pics[62] = 'slideshow_images/img63.jpg';
pics[63] = 'slideshow_images/img64.jpg';
pics[64] = 'slideshow_images/img65.jpg';
pics[65] = 'slideshow_images/img66.jpg';
pics[66] = 'slideshow_images/img67.jpg';
pics[67] = 'slideshow_images/img68.jpg';
pics[68] = 'slideshow_images/img69.jpg';
pics[69] = 'slideshow_images/img70.jpg';
pics[70] = 'slideshow_images/img71.jpg';
pics[71] = 'slideshow_images/img72.jpg';

var trial = 0;

function slide()
{
	if (start == true)
	{
		trial = setInterval("change()", 4000);
		start = false;
	}
	else 
	{
		clearInterval(trial);
		start = true;
	}
		
}

function change()
{
	big_img = document.getElementById("mainimage");
	current++;
	big_img.src = pics[current];
	
}

function shufflepics(direction)
{
	
	
	img1 = document.getElementById("subimage1");
	img2 = document.getElementById("subimage2");
	img3 = document.getElementById("subimage3");
	img4 = document.getElementById("subimage4");
	
	if (direction == 0)
	{
		if (offset > 0)
		{
			
			offset--;
			img1.src = pics[offset];
			img2.src = pics[offset + 1];
			img3.src = pics[offset + 2];
			img4.src = pics[offset + 3];
		}
	}
	else
	{
		if (offset < 67)
		{offset++;
		img1.src = pics[offset];
		img2.src = pics[offset + 1];
		img3.src = pics[offset + 2];
		img4.src = pics[offset + 3];
		}
	}
					 
}

function opacityChange(id, image, picnumber)
{
	opacStart = 0;
	opacEnd = 100;
	millisec= 800;

	dom = document.getElementById(image);
	
	
	//title = document.getElementById("imagetitle");
	
	current = picnumber - 1 + offset;

	
	//changes the opacity of the image
	var speed = Math.round(millisec / 100);
	var timer = 0;


	if(opacStart > opacEnd) {
		
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + image + "')",(timer * speed));
			timer++;

		}
		dom.src = pics[picnumber - 1 + offset];

	} 
	else 
		if(opacStart < opacEnd) {
			
			for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + image + "')",(timer * speed));
			timer++;
			}
			dom.src = pics[picnumber - 1 + offset];
		}
	}


function changeOpac(opacity, id) 
{
	var object = document.getElementById(id).style;
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
}