y=0;
ad=new Array(y);
ad[y++]='fitness-001.png'
ad[y++]='fitness-002.png'
ad[y++]='fitness-003.png'
ad[y++]='fitness-004.png'
ad[y++]='fitness-005.png'
ad[y++]='fitness-006.png'
ad[y++]='fitness-007.png'
ad[y++]='fitness-008.png'
ad[y++]='fitness-009.png'
ad[y++]='fitness-010.png'
ad[y++]='fitness-011.png'
ad[y++]='fitness-012.png'
ad[y++]='fitness-013.png'
ad[y++]='fitness-014.png'
ad[y++]='fitness-015.png'
ad[y++]='fitness-016.png'
ad[y++]='fitness-017.png'
ad[y++]='fitness-018.png'
ad[y++]='fitness-019.png'
ad[y++]='fitness-020.png'


document.write('<img src="http://www.ejercitamos.com/fotos/');
x = Math.floor(Math.random()*(y));
document.write(ad[x]);

document.write('" border="5" width="140" height="140" align="right">');