DS1302 Real Time Clock and 12864 LCD /w Arduino

/*
Required libraries: http://www.rinkydinkelectronics.com/library.php?id=5
            https://code.google.com/p/u8glib/
Blog Post:      http://overskill.alexshu.com/ds1302-real-time-clock-w-arduino/
*/

#include "U8glib.h"
#include <DS1302.h>
DS1302 rtc(2, 3, 4);
U8GLIB_ST7920_128X64 u8g(13, 11, 12, U8G_PIN_NONE);

void draw(void) {
u8g.setFont(u8g_font_04b_03);
u8g.drawStr( 20, 10, "AquaTank Control V2");
u8g.drawStr( 48,20, rtc.getTimeStr());
u8g.drawStr( 40,30, rtc.getDOWStr());
u8g.drawStr( 43,40, rtc.getDateStr());
u8g.drawStr( 17,55, "DS1302 Real Time Clock");
}

void setup(void) {
rtc.halt(false);
rtc.writeProtect(false);

// rtc.setDOW(WEDNESDAY); // Set Day-of-Week to FRIDAY
// rtc.setTime(11, 40, 0); // Set the time to 12:00:00 (24hr format)
// rtc.setDate(9, 4, 2014); // Set the date to August 6th, 2010

// assign default color value
if ( u8g.getMode() == U8G_MODE_R3G3B2 )
u8g.setColorIndex(255); // white
else if ( u8g.getMode() == U8G_MODE_GRAY2BIT )
u8g.setColorIndex(3); // max intensity
else if ( u8g.getMode() == U8G_MODE_BW )
u8g.setColorIndex(1); // pixel on
}

void loop(void) {
// picture loop
u8g.firstPage();
do {
draw();
} while( u8g.nextPage() );

// rebuild the picture after some delay
delay(500);
}