function changeClassName(element, classname)
	{
		var obj = getObj(getIdByElement(element));
		if(obj)
		{
			obj.className = classname;
		}
	}

	function changeStyle(element, style_type, value)
	{
		var obj = getObj(getIdByElement(element));
		if(obj)
		{
			x = "obj.style." + style_type + "= '" + value + "'";
			eval(x);
		}
	}

	function getObj(id)
	{
		var obj;
		obj = document.getElementById(id);
		if(obj)
		{
			return obj;
		}
		alert("No ID: " + id);
		return "";	
	}

	function getIdByElement(element)
	{
		if(element)
		{
			return element.id;
		}
		return "";	
	}
	function isNum(myfield,e)
	{
			var keycode;
			if (window.event)
				keycode = window.event.keyCode;
			else if (e)
				keycode = e.which;
			else
				return true;

			if( isSpecialChar(keycode) )
			{
			   return true;
			}
			else if ( (keycode < 48) || (keycode > 57) )
		  	{
		 	 // sendChatText();
			   return false;
			}
			else
			{
			   return true;
			}
	}
	function isSpecialChar(keycode)
	{
		if( (keycode == 46) || (keycode == 8) || (keycode == 0))
		{
			return true;
		}
		return false;
	}