var pics = new Array(); 
pics[0] = "images/header/hdr_logo1.jpg";
pics[1] = "images/header/hdr_logo2.jpg";
pics[2] = "images/header/hdr_logo3.jpg";
pics[3] = "images/header/hdr_logo4.jpg";
pics[4] = "images/header/hdr_logo5.jpg";
pics[5] = "images/header/hdr_logo6.jpg";
pics[6] = "images/header/hdr_logo7.jpg";
pics[7] = "images/header/hdr_logo8.jpg";
pics[8] = "images/header/hdr_logo9.jpg";
pics[9] = "images/header/hdr_logo10.jpg";
pics[10] = "images/header/hdr_logo11.jpg";
pics[11] = "images/header/hdr_logo12.jpg";
pics[12] = "images/header/hdr_logo13.jpg";
pics[13] = "images/header/hdr_logo14.jpg";
pics[14] = "images/header/hdr_logo15.jpg";
pics[15] = "images/header/hdr_logo16.jpg";
pics[16] = "images/header/hdr_logo17.jpg";

function getRandomPic(range) 
{ 
	var index = 0;
	if (Math.random) 
	{
		index = Math.round(Math.random() * (pics.length-1)); 
	}
	else 
	{ 
		var now = new Date(); 
		index = (now.getTime() / 1000) % range; 
	} 
	return index;
} 

var picToLoad = getRandomPic();