function setBGCOLOR(layName,color){  
  if(document.layers)document.layers[layName].bgColor=color
  if(document.all)document.all(layName).style.backgroundColor=color
  if(document.getElementById)document.getElementById(layName).style.backgroundColor=color
}

function zindexLAYER(layName,zindex){
  if(document.layers)document.layers[layName].zIndex=zindex
  if(document.all)document.all(layName).style.zIndex=zindex
  if(document.getElementById)document.getElementById(layName).style.zIndex=zindex
}

function showLAYER(layName){
  if(document.layers)document.layers[layName].visibility='show'
  if(document.all)document.all(layName).style.visibility='visible'
  if(document.getElementById)document.getElementById(layName).style.visibility='visible'
}

function hideLAYER(layName){
  if(document.layers)document.layers[layName].visibility='hidden'
  if(document.all)document.all(layName).style.visibility='hidden'
  if(document.getElementById)document.getElementById(layName).style.visibility='hidden'
}

window.onload=c02ini;

function c02ini(){
	setBGCOLOR('msg1','#ffffff')
	setBGCOLOR('msg2','#ffffff')
}

function swtOnZ(layName){
	hideLAYER('msg1');hideLAYER('msg2')
	zindexLAYER(layName,2)
}