https://www.motopower.lv/js/image_size.js

1function getImgSize(imgSrc)
2{
3var newImg = new Image();
4newImg.src = imgSrc;
5var height = (newImg.height + 40);
6var width = (newImg.width + 40);
7
8var x_res = screen.width;
9var y_res = screen.height;
10var top = Math.round((y_res-height)/2);
11var left = Math.round((x_res-width)/2);
12
13//alert(width);
14
15if(width>640) {
16window.open(imgSrc,'bilde_jauna_loga', 'width='+width+', height='+height+', left='+left+', top='+top+',  toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,copyhistory=no,resizable=yes');
17	}
18}