// get random number
// crawl.js
// displays a random crawl image

var maxPics = 22; // max number of pics

function getRand()
{
	// using 5 gives you a number between 0 and 4, etc, add 1 to start with 1 instead of 0
	var randNum = (Math.floor(Math.random()*(maxPics))) + 0; // start with 0
	// document.write("max = ", maxPics, " random = ", randNum, " ");
	return randNum;
}

// display random pic
function displayPic()
{
	
	var randNum = getRand();
	
	var imageList = new Array(maxPics);
	for (var i = 0; i < maxPics; i++)
	{
		imageList[i] = i + ".jpg";
 	}
	
 	// document.write(imageList[randNum]);
	document.write("<img class=\"crawlpicture\" src=\"./graphics/crawl/", imageList[randNum], "\">");

} // end display picture