[ribik]

File: ebooks.oeb.display.paged.js

PagedDisplay.prototype.column_at = function(xpos) {

var section_page, new_xpos;

section_page = Math.floor(xpos / this.page_width);

if (section_page % 2 === 1) {

section_page -=1;

new_xpos = section_page * this.page_width;

section_page = this.scroll_to_xpos(new_xpos);

}

return Math.floor(xpos / this.page_width);

};

This is how I wanted it to work. I know it is a "dirty hack", but it works perfectly for my needs, because I have two pages per screen. Backward scroll now works as it should. I'm sure it can be done better, to work with multi-columns (section_page % this.cols_per_screen), but for my reading it's ok.