if (document.images) {       
img1on = new Image();		
img1on.src ="../../style/left_cl_p.gif"; 
img1off = new Image();		  	
img1off.src = "../../style/left_cl_n.gif"; 
img2on = new Image();		
img2on.src ="../../style/right_cl_p.gif"; 
img2off = new Image();		  	
img2off.src = "../../style/right_cl_n.gif"; 
}
function imgOn(imgName) {
if (document.images) {
document[imgName].src = eval(imgName + "on.src");        }}//osw
function imgOff(imgName) {
if (document.images) {
document[imgName].src = eval(imgName + "off.src");        }}