// Change RollOver 
function rollOn(imgname){ //use this for mouseover on images NOT on layers 
          if (document.all){ 
               eval('document.images.'+imgname+'.src='+imgname+'On.src'); 
          } else if (document.layers) { 
               eval('document.'+imgname+'.src='+imgname+'On.src'); 
          } else if (document.getElementById&&!document.all) { 
               eval('document.getElementById("'+imgname+'").src='+imgname+'On.src'); 
          }           
} 

// Revert to Default Image 
function rollOff(imgname) { //use this for mouseout on images NOT on layers 
          if (document.all) { 
               eval('document.images.'+imgname+'.src='+imgname+'Off.src'); 
          } else if (document.layers) { 
               eval('document.'+imgname+'.src='+imgname+'Off.src'); 
          } else if (document.getElementById&&!document.all) { 
               eval('document.getElementById("'+imgname+'").src='+imgname+'Off.src'); 
          }        
}