function tabit(btn){
	var idname = new string(btn.id);
	var s = idname.indexof("_");
	var e = idname.lastindexof("_")+1;
	var tabname = idname.substr(0, s);
	var id = parseint(idname.substr(e, 1));
	var tabnumber = btn.parentnode.childnodes.length;
	for(i=0;i<tabnumber;i++){
			//document.getelementbyid(tabname+"_div_"+i).style.display = "none";
			document.getelementbyid(tabname+"_btn_"+i).classname = "";
		};
		//document.getelementbyid(tabname+"_div_"+id).style.display = "block";
		btn.classname = "curr";
};

function etabit(btn){
	var idname = new string(btn.id);
	var s = idname.indexof("_");
	var e = idname.lastindexof("_")+1;
	var tabname = idname.substr(0, s);
	var id = parseint(idname.substr(e, 1));
	var tabnumber = btn.parentnode.childnodes.length;
	for(i=0;i<tabnumber;i++){
			document.getelementbyid(tabname+"_div_"+i).style.display = "none";
			document.getelementbyid(tabname+"_btn_"+i).classname = "";
		};
		document.getelementbyid(tabname+"_div_"+id).style.display = "block";
		btn.classname = "curr";
};