function tabContent(tabboxId, contentNum) {
	for( i = 1; i <= 9 && document.getElementById(tabboxId+"-tab"+i) != null; i++ ) {
		if( i == contentNum ) {
			document.getElementById(tabboxId+"-tab"+i).className = "activetab";
			document.getElementById(tabboxId+"-content"+i).className = "showcontent";
		}
		else {
			document.getElementById(tabboxId+"-tab"+i).className = "";
			document.getElementById(tabboxId+"-content"+i).className = "hidecontent";
		}
	}
}