var picArray = new Array(
	"pic_1.jpg",
	"pic_7.jpg",
	"pic_3.jpg",
	"pic_4.jpg",
	"pic_5.jpg",
	"pic_6.jpg",
	"pic_8.jpg",
	"pic_9.jpg",
	"pic_10.jpg",
	"pic_11.jpg",
	"pic_2.jpg");

function createImage(mypic){
	document.write('<img src="images/pics/');
	if(mypic){
		document.write(mypic);
	
	} else {
		mynum = Math.floor(Math.random()*picArray.length);
		document.write(picArray[mynum]);
	}
	document.write('" border="0"/>');
}