chMenu=0;
function subopen(tName){
tMenu=(document.all)?document.all(tName).style:document.getElementById(tName).style;
if(chMenu)chMenu.display="none";
if(chMenu==tMenu){chMenu=0;
}else{chMenu=tMenu;
tMenu.display="block";}
}

function myChgPic(myPicURL){
   document.images["myBigImage"].src = myPicURL;
}