function studyView(contents,btnID) {
	obj_con = document.getElementById('' + contents + '');
	obj_btn = document.getElementById('' + btnID + '');

		if (obj_con.style.display=="none" || obj_con.style.display=="")	{
			obj_con.style.display="block";
			obj_btn.src= imgRoot + "/image/products/btn_arrowBar_up.gif";
		}
		else	{
			obj_con.style.display="none";
			obj_btn.src= imgRoot + "/image/products/btn_arrowBar_down.gif";
		}
}

function goTab(type){
	if(type == 'A'){
		document.getElementById("tab1").style.display="";
		document.getElementById("tab2").style.display="none";
	}else if(type == 'B'){
		document.getElementById("tab1").style.display="none";
		document.getElementById("tab2").style.display="";	
	}
}