Код HTML
<a href= \"javascript://\"
onclick= \"ShareToVk()\" > Поделиться
Вконтакте </a>

                        
<script type= "text/javascript" >

function ShareToVk () {

tltl = document .title

width = 550

height = 268

w_top = (window .screen.height -

height)/ 2

w_left = (window .screen.width -

width)/ 2

window.open ('http://vk.com/

share.php?

url='+ document .location.href

+'&tltl='+ tltl +'&cmg=1' ,

'shareSite', 'width=550px,height=268px,resizable=yes,scrollbars=yes,left='+ w_left

+',top='+ w_top );}

}

</script>