function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

var img = new Array();
var lk  = new Array();


function rotate(x) {
	
	document.getElementById('banner-link').href = lk[x];
	document.getElementById('banner-image').src = img[x].src; 
	setTimeout('change()', 2000);
}


function change() {

	x = 0;
	
	var ran_unrounded=Math.random()*7;
	var x=Math.floor(ran_unrounded);
	
	rotate(x);
}

function init() {
	
	
	img[0] = new Image;
	img[0].src = '/images/top-photos.jpg';
	lk[0] = '#';

	img[1] = new Image;
	img[1].src = '/images/banners/eyecarbiz.gif';
	lk[1] = 'http://www.eyecarebiz.com/';
	
	img[2] = new Image;
	img[2].src = '/images/banners/hoya.gif';
	lk[2] = 'http://www.hoyavision.com';
	
	img[3] = new Image;
	img[3].src = '/images/banners/transitions.gif';
	lk[3] = 'http://www.transitions.com';

	img[4] = new Image;
	img[4].src = '/images/banners/carlziess.gif';
	lk[4] = 'http://www.vision.zeiss.com/us';

	
	img[5] = new Image;
	img[5].src = '/images/banners/marchon.gif';
	lk[5] = 'http://marchon.com/';


	setTimeout('change()', 500);
	
	
	
}





function toggle(el) {
	
	elem = document.getElementById(el).style;
	
	vis = elem.display;
	elem.display = (vis == 'block') ? 'none' : 'block';
	
	return false;
}