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";
};
function getImgSize(_img){
		var pw = _img.parentNode.style["width"];
		pw = pw.substring(0,pw.length - 2);
		var ph = _img.parentNode.style["height"];
		ph = ph.substring(0,ph.length - 2);
		var param = 0;
		if(_img.width/_img.height > pw/ph){
			param = _img.width;
			_img.width = pw;
			_img.height = _img.height * (_img.width/pw);
		}else{
			param = _img.height;
			_img.height = ph;
			_img.width = _img.width * (_img.height/ph);
		}
	}