// random main img

var mainImg = new Array();

for(h=1;h<=5;h++){

	mainImg[h]=new Image();

	mainImg[h].src="random_img/photo"+h+".jpg";

}

function mainImgtAct(num) {

	document.images['mainImg'].src = mainImg[num].src ;

}



var randomNum = 1;

randomNum = randomNum + Math.floor(Math.random()*5);

function randomImg() {

	mainImgtAct(randomNum);

}