put google plus button dynamically

dynamic_gplus.js

var gplusoneLoaded = false;

// gplus
var $gplus = $('#somewhere'); // the src is like <div id="somewhere"><!-- put plus button here! --></div>
if($gplus.size()){
	window.___gcfg = {lang: 'ja'};
	$gplus.html('<div class="g-plusone" data-size="medium" data-href="' + window.location.href + '"></div>');
	if(!gplusoneLoaded){
		gplusoneLoaded = true;
		$.getScript("https://apis.google.com/js/plusone.js");
	}else{
		if(gapi){ // IE7 can't handle it
			gapi.plusone.go();
		}
	}
}