function ShowHideBlock(blockId){
	if(document.getElementById(blockId)){
		var obj = document.getElementById(blockId);
		if(obj.style.display == "block" || obj.style.display == "") {
			obj.style.display = "none";
		} else {
			obj.style.display = "block";
		}
	}
}

function ShowBlock(blockId){
	if(document.getElementById(blockId)){
		var obj = document.getElementById(blockId);
		obj.style.display = "block";
	}
}

function HideBlock(blockId){
	if(document.getElementById(blockId)){
		var obj = document.getElementById(blockId);
		obj.style.display = "none";
	}
}