if (document.images) { 

r1= new Image(138,24); 
r1.src="images/nav_home_off.gif"; 
r2= new Image(138,29); 
r2.src="images/nav_services_off.gif"; 
r3= new Image(138,32); 
r3.src="images/nav_technology_off.gif"; 
r4= new Image(138,40); 
r4.src="images/nav_appointment_off.gif"; 
r5= new Image(138,40); 
r5.src="images/nav_new_patient_off.gif"; 
r6= new Image(138,28); 
r6.src="images/nav_location_off.gif"; 

r7= new Image(138,28); 
r7.src="images/nav_dental_off.gif"; 
r8= new Image(138,28); 
r8.src="images/nav_dental_care_off.gif"; 
r9= new Image(138,28); 
r9.src="images/nav_specials_off.gif"; 



//

rr1= new Image(138,24); 
rr1.src="images/nav_home_on.gif"; 
rr2= new Image(138,29); 
rr2.src="images/nav_services_on.gif"; 
rr3= new Image(138,32); 
rr3.src="images/nav_technology_on.gif"; 
rr4= new Image(138,40); 
rr4.src="images/nav_appointment_on.gif"; 
rr5= new Image(138,40); 
rr5.src="images/nav_new_patient_on.gif"; 
rr6= new Image(138,28); 
rr6.src="images/nav_location_on.gif";

rr7= new Image(138,28); 
rr7.src="images/nav_dental_on.gif"; 
rr8= new Image(138,28); 
rr8.src="images/nav_dental_care_on.gif"; 
rr9= new Image(138,28); 
rr9.src="images/nav_specials_on.gif"; 



}


function changeImage(row,s) {

var h;

h= (s==1)? "r":"";

if (document.images) {

document.images[row].src = eval(h+row + ".src");

}

}