function main() {
	
	var screen_width = 0, screen_height = 0;
	if ( typeof( window.innerWidth ) == 'number') {
		if(navigator.userAgent.indexOf("Opera")!=-1){
			screen_width = screen.availWidth;
			screen_height = screen.availHeight;
		} else {
			screen_width = screen.availWidth;
			screen_height = screen.availHeight - 17;
		}
		
	} else {
		screen_width = screen.availWidth;
		screen_height = screen.availHeight;
	}

	if (screen_width >= 1000 && screen_height >= 825) {
		var screen_resize = 'no', screen_scroll = 'no';
	} else {
		var screen_resize = 'yes', screen_scroll = 'yes';
	}
	
	window.open('main.htm','','toolbar=no,directories=no,location=no,width=' + screen_width + ',height=' + screen_height + ',left=0,top=0,status=no,menubar=no,resizable=' + screen_resize + ',scrollbars=' + screen_scroll);
	
}