I would recommend using CSS3 animation to handle the blink. And target the arrow on load.
CSS (attach as a .css file in the Resources section of the in5 dialog):
.blink {
animation: blink 1s steps(5, start) infinite;
-webkit-animation: blink 1s steps(5, start) infinite;
}
@keyframes blink {
to {
visibility: hidden;
}
}
@-webkit-keyframes blink {
to {
visibility: hidden;
}
}
JavaScript (attach as a .js file in the Resources section):
$(function(){
$('#slider').on('initialized', function(){
$('.anythingSlider-in5 .arrow.forward').addClass('blink');
$('#slider').one('slide_begin',function(){
$('.anythingSlider-in5 .arrow.forward').removeClass('blink');
});
});
It will add the blink class to the forward arrow when the slider is initialized, then remove it after you leave page 1 for the first time.