function init() {
	    var max_num = document.getElementById("img_max_num").innerHTML;		
		var rnum = Math.floor(Math.random() * max_num);
		if (rnum < 1) {
		   rnum = max_num;	
		}		
		var newSrc = "graphics/home_images/img" + rnum + ".jpg";

   		document.getElementById("slideshow_img").src = newSrc;					
		document.getElementById("img_num").innerHTML = rnum;
			
		changeDesc();
}

function displayMembers() {
		 document.getElementById("members_links").style.display = 'block';
}

function nextImage() {
	var new_num = document.getElementById("img_num").innerHTML;
	var max_num = document.getElementById("img_max_num").innerHTML; 	

	new_num++;
		
	if (new_num > max_num) {
		new_num = 1;	
	}
	
	var newSrc = "graphics/home_images/img" + new_num + ".jpg";
   	document.getElementById("slideshow_img").src = newSrc;					
	document.getElementById("img_num").innerHTML = new_num;
	
	var newLink = "graphics/home_images/img" + new_num + ".jpg";
	
	changeDesc();
}

function prevImage() {
	var new_num = document.getElementById("img_num").innerHTML; 	
	var max_num = document.getElementById("img_max_num").innerHTML;
	
	new_num--;
		
	if (new_num < 1) {
		new_num = max_num;	
	}
	
	var newSrc = "graphics/home_images/img" + new_num + ".jpg";
   	document.getElementById("slideshow_img").src = newSrc;					
	document.getElementById("img_num").innerHTML = new_num;
	
	changeDesc();
}

function changeDesc() {
    var num = document.getElementById("img_num").innerHTML;
	var text_all = document.getElementById("img_desc_text").innerHTML;
	
	var begin = text_all.indexOf(num + ".");
	var end = text_all.indexOf(";", begin);
	
	var desc = text_all.substr(begin + 3, end - begin - 3);
	
	document.getElementById("img_desc_display_text").innerHTML = desc;
}