function popwindow(mypage, myname, w, h, scroll) {
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable'
	win = window.open(mypage, myname, winprops)
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}

function checkpage(){
		var tempURL=new String(document.URL)
		var loadURL=tempURL.split("?")
		var resetnumber=loadURL[1]
		var whichpage=(resetnumber-1)*1
		whichpage="page" + (whichpage*1+1)
		changepageon(whichpage,'pageon')
}

function changepageon(whichtabe,whichclass){
		var obj=document.getElementById(whichtabe)
		var objclass=whichclass
		obj.className=objclass
}

function changepageclass(whichtabe,whichclass){
		var obj=document.getElementById(whichtabe)
		var objclass=whichclass
		obj.className=objclass
}