function tc(oid){	//toggle content
	var t = document.getElementById("t" + oid);
	var a = document.getElementById("a" + oid);
	var s = a.src.replace(/\D/g, '');
	if(t.style.display == "block"){
		t.style.display = "none";
		a.src =  'images/arrow/3.gif';
		//alert "root + 'images/arrow/' + s + '.gif'";
	}else{
		t.style.display = "block";
		a.src =  'images/arrow/3d.gif';
		
	}
	resetAndResize();
	return false;
}

function tc1(oid){	//toggle content
	var t = document.getElementById("t" + oid);
	var a = document.getElementById("a" + oid);
	var s = a.src.replace(/\D/g, '');
	if(t.style.display == "block"){
		t.style.display = "none";
		a.src =  'images/arrow/4.gif';
		//alert "root + 'images/arrow/' + s + '.gif'";
	}else{
		t.style.display = "block";
		a.src =  'images/arrow/4d.gif';
		
	}
	
	resetAndResize();
	return false;
}