function leftroll(num, flag) {
	
	var cell = document.getElementById("navleft_" + num );
	var right = document.getElementById("navleftb_" + num );
	var arrow = document.getElementById("navleft_arrow_" + num );
	
	if ( cell && arrow && right ){
	
		if ( flag){
			cell.className = "button2";
			arrow.src = "/images/extendedCare/nav/arrow2.gif";
			right.className = "arrowtd2";
		}else{
			cell.className = "button1"
			arrow.src= "/images/extendedCare/nav/arrow1.gif";
			right.className = "arrowtd";
		}
	}
}