Open a window bottom right of the screen
HTML
<input type="button" value="click me!" />
JavaScript
jQuery('input').click(function() {
var screen = window.screen;
var height = screen.availHeight;
var width = screen.availWidth;
var browserChromeHeight = 601; // magic number!
var browserChromeWidth = 12; // magic number!
var windowProperties = [];
windowProperties.push('width=300');
windowProperties.push('height=300');
windowProperties.push('top=' + (height - 300 - browserChromeHeight));
windowProperties.push('left=' + (width - 300 - browserChromeWidth));
window.open('//google.com', 'mywindow', windowProperties.join(','));
});