utb,
можно сделать проще
<!DOCTYPE html><html class=''>
<head><meta charset='UTF-8'>
<style>.block {
width: 800px;
margin: 0 auto;
}
.block_select {
width: 30%;
float: left;
}
.block_scroll {
width: 70%;
float: left;
height: 150px;
overflow: auto;
position: relative;
}
.block_scroll ul li {
margin-bottom: 10px;
}
.block_scroll_hidden {
display: none;
}
#id15 {
color: #f00;
}
</style></head><body>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
</head>
<body>
<div class="block">
<div class="block_select">
<div class="id15">Клик15</div>
<div class="id16">Клик 16</div>
</div>
<div class="block_scroll">
<ul>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 2.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 3.</span>
<div class="block_scroll_hidden">
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</div></li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 2.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 3.</span>
<div class="block_scroll_hidden">
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</div></li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 2.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 3.</span>
<div class="block_scroll_hidden">
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</div> </li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li id="id15"><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 2.1515</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li id="id16"><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 3161616.</span>
<div class="block_scroll_hidden">
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</div></li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 2.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 3.</span>
<div class="block_scroll_hidden">
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</div></li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 2.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 3.</span>
<div class="block_scroll_hidden">
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</div></li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 2.</span>
<div class="block_scroll_hidden">
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</div>
</li>
<li><span>Lorem ipsum dolor sit amet, consectetuer adipiscing elit 3.</span>
<div class="block_scroll_hidden">
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</div>
</li>
</ul>
</div>
</div>
</body>
</html>
<script>$(document).ready(function() {
$('.id15').click(function(){
var setposition = $('#id15').position().top;
$('.block_scroll').animate({
scrollTop: '+=' +setposition
}, 1000);
});
$('.id16').click(function(){
var setposition = $('#id16').position().top;
$('.block_scroll').animate({
scrollTop: '+=' +setposition
}, 1000);
});
})
</script>
</body></html>