///align_x(region, _unit%)

var zone = argument[0];

if (argument_count > 1)
{
    var percent = argument[1];
    var deplacement = global.unit * percent;
}
else
    var deplacement = 0;

switch(zone)
{
    case region.mid_left:
    case region.bot_left:
        var x_start = global.window_width*0.75 - global.window_width*0.25/2;
    break;
    
    case region.mid_right:
    case region.bot_right:
        var x_start = global.window_width*0.75 + global.window_width*0.25/2;
    break;
    
    case region._25:
        var x_start = global.window_width * 0.25;
    break;
    
    case region._50:
        var x_start = global.window_width * 0.50;
    break;
    
    case region._75:
        var x_start = global.window_width * 0.75;
    break;
}

return x_start + deplacement;