function SelectTab(tabid, numtabs) {
	var i;
	for(var i=0;i<numtabs;i++) {
			tabdivname = 'tbdiv' + i;
			tabname = 'tb' + i;
			document.getElementById(tabname).className = 'taboff';
			document.getElementById(tabdivname).className = 'tabdivoff';
			document.getElementById(tabdivname).style.display = 'none';
			if( i == tabid ) { 
				document.getElementById(tabname).className = 'tabon'; 
				document.getElementById(tabdivname).className = 'tabdivon';
				document.getElementById(tabdivname).style.display = 'block';
			}
	}
}