Random IMGUR finder

gistfile1.txt

function randomString(string_length)
{
	var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
	var output = "";
	var index;

	for (var i = 0; i < string_length; i++)
	{
		var index = Math.floor(Math.random() * chars.length);
		output += chars.substring(index, index + 1);
	}

	return output;
}

function getImages()
{
	var numTries = 1;
	var imgObject = new Image();
	var dots = "";

	imgObject.onload = function()
	{
		if (this.width == 161 && this.height == 81)
		{
			this.src = "http://i.imgur.com/" + randomString(5) + ".jpg";
			dots += ".";
			document.getElementById('a').innerHTML = "Please wait..." + dots;
			numTries++;
		}
		else
			document.getElementById('a').innerHTML = "It took " + numTries + (numTries == 1 ? " try" : " tries") + " to get this picture. <a href=\"javascript:getImages();\">Load new image</a><br/><br/><a href=\"" + imgObject.src + "\">" + imgObject.src + "<br/><img src=\"" + imgObject.src + "\" /></a>";
	}

	// First image attempt that sets off the onload code defined above
	imgObject.src = "http://i.imgur.com/" + randomString(5) + ".jpg";
}