function swapon(whichimg){

 eval('document.images["'+whichimg+'"].src = '+whichimg+'on.src');

}



function swapoff(whichimg){

 eval('document.images["'+whichimg+'"].src = '+whichimg+'off.src');

}



function doPop(fileName)
{
   popWindow = window.open(fileName,"_blank","width=375,height=300,resizable=no,scrollbars=no,location=no,menubar=no");
   popWindow.focus();
   return false;
}

function doRedirect(fileName)
{
   redirectWindow = window.open(fileName,"_blank","width=640,height=640,resizable=yes,scrollbars=yes,location=no,menubar=no");
   redirectWindow.focus();
   return false;
}


previouson = new Image;

previouson.src = "http://cme.cancer.gov/c02/images/previous2.gif";

previousoff = new Image;

previousoff.src = "http://cme.cancer.gov/c02/images/previous1.gif";



nexton = new Image;

nexton.src = "http://cme.cancer.gov/c02/images/next2.gif";

nextoff = new Image;

nextoff.src = "http://cme.cancer.gov/c02/images/next1.gif";



resourceson = new Image;

resourceson.src = "http://cme.cancer.gov/c02/images/res2.gif";

resourcesoff = new Image;

resourcesoff.src = "http://cme.cancer.gov/c02/images/res1.gif";



bmarkon = new Image;

bmarkon.src = "http://cme.cancer.gov/c02/images/bmark2.gif";

bmarkoff = new Image;

bmarkoff.src = "http://cme.cancer.gov/c02/images/bmark1.gif";



glossaryon = new Image;

glossaryon.src = "http://cme.cancer.gov/c02/images/glossary2.gif";

glossaryoff = new Image;

glossaryoff.src = "http://cme.cancer.gov/c02/images/glossary1.gif";



helpon = new Image;

helpon.src = "http://cme.cancer.gov/c02/images/help2.gif";

helpoff = new Image;

helpoff.src = "http://cme.cancer.gov/c02/images/help1.gif";



audioon = new Image;

audioon.src = "http://cme.cancer.gov/c02/images/audio2.gif";

audiooff = new Image;

audiooff.src = "http://cme.cancer.gov/c02/images/audio1.gif";



transon = new Image;

transon.src = "http://cme.cancer.gov/c02/images/trans2.gif";

transoff = new Image;

transoff.src = "http://cme.cancer.gov/c02/images/trans1.gif";

pdfon = new Image;
pdfon.src = "http://cme.cancer.gov/c02/images/pdf2.gif";
pdfoff = new Image;
pdfoff.src = "http://cme.cancer.gov/c02/images/pdf1.gif";