numphoto=Math.round(Math.random()*18);
numphoto_1=numphoto+1;
numphoto_2=numphoto+2;
numphoto_3=numphoto+3;

/*
LIENS
*/
photo = new Array;

url = new Array;

photo[0]="photos_7/ph_0.jpg";
photo[1]="photos_7/ph_1.jpg";
photo[2]="photos_7/ph_11.jpg";
photo[3]="photos_7/ph_21.jpg";
photo[4]="photos_7/ph_2.jpg";
photo[5]="photos_7/ph_12.jpg";
photo[6]="photos_7/ph_3.jpg";
photo[7]="photos_7/ph_13.jpg";
photo[8]="photos_7/ph_4.jpg";
photo[9]="photos_7/ph_14.jpg";
photo[10]="photos_7/ph_10.jpg";
photo[11]="photos_7/ph_5.jpg";
photo[12]="photos_7/ph_15.jpg";
photo[13]="photos_7/ph_6.jpg";
photo[14]="photos_7/ph_16.jpg";
photo[15]="photos_7/ph_7.jpg";
photo[16]="photos_7/ph_17.jpg";
photo[17]="photos_7/ph_8.jpg";
photo[18]="photos_7/ph_18.jpg";
photo[19]="photos_7/ph_9.jpg";
photo[20]="photos_7/ph_19.jpg";
photo[21]="photos_7/ph_20.jpg";

document.write('<td align=center><img src="'+photo[numphoto]+'" height=120 width=170></td><td align=center><img src="'+photo[numphoto_1]+'" height=120 width=170></td><td align=center><img src="'+photo[numphoto_2]+'" height=120 width=170></td><td align=center><img src="'+photo[numphoto_3]+'" height=120 width=170></td></tr>');