// Change values to increase or decrease number of each kind of photo shown

var num_front_pics = 5;
var num_overview_pics = 5;
var num_winter_pics = 5;
var num_fiber_pics = 5;

// Leave the follwing as is.

var preFront = new Array();
for (i = 1; i < num_front_pics + 1 ; i++){
  preFront[i] = new Image();
  preFront[i].src = "images/front-pics/"+[i]+".jpg";
}

var preOverview = new Array();
for (i = 1; i < num_overview_pics + 1; i++){
  preOverview[i] = new Image();
  preOverview[i].src = "images/overview/"+[i]+".jpg";
}

var preWinter = new Array();
for (i = 1; i < num_winter_pics + 1; i++){
  preWinter[i] = new Image();
  preWinter[i].src = "images/winter-pics/"+[i]+".jpg";
}

var preFiber = new Array();
for (i = 1; i < num_fiber_pics + 1; i++){
  preFiber[i] = new Image();
  preFiber[i].src = "images/fiber-pics/"+[i]+".jpg";
}


var time;
var thispage;
var nextone = 1;
function slideshow(which){
  thispage = which;
  if(document.getElementById("slideshow")){
    time = setTimeout("advance()", 5000);
  }
}
function advance(){
  if(document.getElementById("slideshow")){

	 clearTimeout(time);
	// var curnum = document.getElementById("slideshow").src;
	 //var next = curnum.charAt(curnum.length-5);
	 
	 if(thispage=="Front"){
		if(nextone > num_front_pics){nextone = 1};
		document.getElementById("slideshow").src = preFront[nextone].src;
		}
	 else if(thispage=="Overview"){
		if(nextone > num_overview_pics){nextone = 1};
		document.getElementById("slideshow").src = preOverview[nextone].src;
		}
	else if(thispage=="Winter"){
		if(nextone > num_winter_pics){nextone = 1};
		document.getElementById("slideshow").src = preWinter[nextone].src;
		}
	else if(thispage=="Fiber"){
		if(nextone > num_fiber_pics){nextone = 1};
		document.getElementById("slideshow").src = preFiber[nextone].src;
		}
	  else {alert("Please be patient while we fix this problem.");}
	 nextone++;
	 time = setTimeout("advance()", 5000);
  }
}

function domail(){
  document.write('<a href="mailto:info&#64;artworkshops.com">info&#64;artworkshops.com</a>');
}

if (window.self.location!=window.top.location){window.top.location="index.html"}


function validate(theform){
	if (theform.name.value == ""){			 alert("Please include your name.");return false;}
  else if (theform.email.value == ""){			 alert("Please include your email address.");return false;}
  else if (!((theform.email.value.indexOf(".") > 2) && (theform.email.value.indexOf("@") > 0))){alert("Please include a valid email address.");return false;}
  else if (theform.address.value == ""){		 alert("Please include your street address.");return false;}
  else if (theform.city.value == ""){			 alert("Please include your city.");return false;}
  else if (theform.stateprovince.value == ""){ alert("Please include your state or province.");return false;}
  else if (theform.zip.value == ""){			  alert("Please include your zip or postalcode.");return false;}
  else{return true;}
}