$(function() {

$("a[href^='http://']").attr("target","_blank");

$(".page_top img").click(function(){
$($.browser.opera ? document.compatMode == "BackCompat" ? "body" : "html" :"html,body").animate({scrollTop:0}, "slow","swing");
return false;
});

$("a[href^=#]").click(function(){
var target;
target = $( $(this).attr("href") );
if (target.length == 0) {
return;
}
$('html, body').animate({scrollTop: target.offset().top});
return false;
});

});