function generateRandomImage()
{
	//declare array
	var array = new Array;

	//populate the array with the image name
	array[0] = "responsibility";
	array[1] = "security";
	array[2] = "thinkabout";
	array[3] = "liveandlearn";
	array[4] = "dosomething";

	//generate a random number 0 - 4
	var ran_unrounded=Math.random()*4;
	var ran_number=Math.floor(ran_unrounded);


	pic.src = "images/"+array[ran_number]+".jpg";
}