ns4 = (document.layers)?true:false
ie4 = (document.all)?true:false
ns6 = (document.getElementById)?true:false
//////////////////////////////////////////////////////////

function active(show, h1, h2, h3, h4, h5){
	if(document.images){
	  if (ns4){
	  	document.layers[show].visibility='show'
		document.layers[h1].visibility='hide'
		document.layers[h2].visibility='hide'
		document.layers[h3].visibility='hide'
		document.layers[h4].visibility='hide'
		document.layers[h5].visibility='hide'

     }else if(ie4) {
	 	var divisions = document.all.tags("div")
	 	divisions[show].style.visibility='visible'
		divisions[h1].style.visibility='hidden'
		divisions[h2].style.visibility='hidden'
		divisions[h3].style.visibility='hidden'
		divisions[h4].style.visibility='hidden'
		divisions[h5].style.visibility='hidden'
     }
	else if(ns6){
  		document.getElementById(show).style.visibility='visible'
		document.getElementById(h1).style.visibility='hidden'
		document.getElementById(h2).style.visibility='hidden'
		document.getElementById(h3).style.visibility='hidden'
		document.getElementById(h4).style.visibility='hidden'
		document.getElementById(h5).style.visibility='hidden'
	} 
   }       
}

function active1(show){
	if(document.images){
	 if(ns6){
       document.getElementById(show).style.visibility='hidden'
				
}	
	else  if(ns4){
	  	document.layers[show].visibility='hide'
				
     }
	 else {
	 	var divisions = document.all.tags("div")
	 	divisions[show].style.visibility='hidden'
			
     }	 
   }       
}

function active2(show){
	if(document.images){
	 if(ns6){
       document.getElementById(show).style.visibility='visible'
				
}	
	else  if(ns4){
	  	document.layers[show].visibility='show'
				
     }
	 else {
	 	var divisions = document.all.tags("div")
	 	divisions[show].style.visibility='visible'
			
     }	 
   }       
}