er_1_eq_temp_id + "_temp);");
    } else if(document.getElementById("button_2").disabled) {
        start_x = client_to_x(client_x - canvas_rect.left);
        start_y = client_to_y(client_y - canvas_rect.top);
    } else if(document.getElementById("button_3").disabled) {
        end_step_length = temp_end_step_length;
    }
    draw_solver_1(0, 0, false);
    draw_solver_2(0, 0, false);
}

function init_solver_1(){
    var solver = document.getElementById("solver_1");
    var canvas_rect = solver.getBoundi