function toggle_div_display(divName,strDisplay) {
	
	if(strDisplay) {
		document.getElementById(divName).style.display=strDisplay;
	} else {
		if(document.getElementById(divName).style.display=='none') {
			document.getElementById(divName).style.display='';
		} else {
			document.getElementById(divName).style.display='none';
		}
	}
	return;
}