// JavaScript Document

function swapClass(){ 
 var q,x,tB,z=0,tA=new Array(),arg=swapClass.arguments;
 if(document.getElementsByTagName){for(q=4;q<arg.length;q++){tB=document.getElementsByTagName(arg[q]);
  for(x=0;x<tB.length;x++){tA[z]=tB[x];z++;}}for(q=0;q<tA.length;q++){
  if(tA[q].className){if(tA[q].id==arg[1]){if(arg[0]==1){
  tA[q].className=(tA[q].className==arg[3])?arg[2]:arg[3];}else{tA[q].className=arg[2];}
  }else if(arg[0]==1 && arg[1]=='none'){if(tA[q].className==arg[2] || tA[q].className==arg[3]){
  tA[q].className=(tA[q].className==arg[3])?arg[2]:arg[3];}
  }else if(tA[q].className==arg[2]){tA[q].className=arg[3];}}}}
}