function SetItemEnabled(itemId,enabled){
	if(!document.getElementById)
		return;
	var item = document.getElementById(itemId);
	if(!item)
		return;
	item.disabled = !enabled;
	if(item.type=="checkbox" || item.type=="radio"){
		var aspnetSpan=item.parentNode;
		if(aspnetSpan){
			aspnetSpan.disabled = !enabled;
		}
	
	}
}


function SetItemVisible(itemId,visible){
	if(!document.getElementById)
		return;
	var itemStyle = document.getElementById(itemId).style;
	if(!itemStyle)
		return;
	if(visible==true){
		itemStyle.visibility = "visible";
		itemStyle.display='block';
	}
	else {
		itemStyle.visibility = "hidden";
		itemStyle.display='none';
	}
	var item = document.getElementById(itemId);
	if(item.type=="checkbox" || item.type=="radio"){
		var aspnetSpan=item.parentNode;
		if(aspnetSpan){
			aspnetSpan.style.visibility = itemStyle.visibility;
			aspnetSpan.style.display = itemStyle.display;
		}
	}
}