var browse = window.navigator.appName.toLowerCase();
var MyMar;
var speed = 20;
var spec = 1; 
var minOpa = 50; 
var maxOpa = 100; 
var spa = 2;
var w = 0;

speed = (browse.indexOf("microsoft") > -1) ? speed : ((browse.indexOf("opera") > -1) ? speed*1/2 : speed*5);

spec = (browse.indexOf("microsoft") > -1) ? spec : ((browse.indexOf("opera") > -1) ? spec*10 : spec*20);
function $(e) {return document.getElementById(e);}
function goleft() {$('photos').scrollLeft-= spec;}
function goright() {$('photos').scrollLeft += spec;}
function setOpacity(e, n) {
 //   if (browse.indexOf("microsoft") > -1) e.style.filter = 'alpha(opacity=' + n + ')';
  //  else e.style.opacity = n/100;
}
$('goleft').style.cursor = 'pointer';
$('goright').style.cursor = 'pointer';

$('goleft').onmouseover = function() {MyMar=setInterval(goleft, speed);setOpacity(this, maxOpa);this.src='images/arrow_left.jpg'}
$('goleft').onmouseout = function() {clearInterval(MyMar);setOpacity(this, minOpa);this.src='images/arrow_left.jpg'}
$('goright').onmouseover = function() {MyMar=setInterval(goright,speed);setOpacity(this, maxOpa);this.src='images/arrow_right.jpg'}
$('goright').onmouseout = function() {clearInterval(MyMar);setOpacity(this, minOpa);this.src='images/arrow_right.jpg'}