function switchClass2 (sElementName) 
 { 
	switchClass (document.getElementById(sElementName),'ttl_special_blue','ttl_special_blue_roll') 
 }
 function restoreClass2 (sElementName) 
 { 
	restoreClass (document.getElementById(sElementName)) 
 }
 
 function switchClass3 (sElementName) 
 { 
	switchClass (document.getElementById(sElementName),'ttl_special_orange','ttl_special_orange_roll') 
 }
 function restoreClass3 (sElementName) 
 { 
	restoreClass (document.getElementById(sElementName)) 
 }
function switchClass (el,currentClass,newClass) 
 {  
 el.setAttribute("oldClass",currentClass);
 el.setAttribute("newClass",newClass);
 el.className=el.className.replace(currentClass,newClass);
 
 }

function restoreClass (el) 
 {  
 el.className=el.className.replace(el.getAttribute("newClass"), el.getAttribute("oldClass"));
 }