numdivs=2

IE5=NN4=NN6=false
if(document.all)IE5=true
else if(document.layers)NN4=true
else if(document.getElementById)NN6=true

function init() {
	showFirst(0)
	showSecond(0)
	flipSecond(show)
}
function showFirst( div ) {
//swaps content
	for(i=0;i<numdivs;i++) {
		if(NN4) eval("document.firstDiv"+i+".visibility='hidden'")
		if(IE5) eval("document.all.firstDiv"+i+".style.visibility='hidden'")
		if(NN6) eval("document.getElementById('firstDiv"+i+"').style.visibility='hidden'")
	}
	if(NN4) eval("document.firstDiv"+div+".visibility='visible'")
	if(IE5) eval("document.all.firstDiv"+div+".style.visibility='visible'")
	if(NN6) eval("document.getElementById('firstDiv"+div+"').style.visibility='visible'")




}

//swaps main content
function showSecond( div ) {
	for(i=0;i<numdivs;i++) {
		if(NN4) eval("document.secondDiv"+i+".visibility='hidden'")
		if(IE5) eval("document.all.secondDiv"+i+".style.visibility='hidden'")
		if(NN6) eval("document.getElementById('secondDiv"+i+"').style.visibility='hidden'")
	}
	if(NN4) eval("document.secondDiv"+div+".visibility='visible'")
	if(IE5) eval("document.all.secondDiv"+div+".style.visibility='visible'")
	if(NN6) eval("document.getElementById('secondDiv"+div+"').style.visibility='visible'")


}

function flipSecond( state )
	{
		if(NN4) eval("document.Tab21.visibility='"+state+"'")
		if(IE5) eval("document.all.Tab21.style.visibility='"+state+"'")
		if(NN6) eval("document.getElementById('Tab21').style.visibility='"+state+"'")

		if(NN4) eval("document.secondDiv1.visibility='"+state+"'")
		if(IE5) eval("document.all.secondDiv1.style.visibility='"+state+"'")
		if(NN6) eval("document.getElementById('secondDiv1').style.visibility='"+state+"'")
	}