function dom() 
{
	this.get_elements_by_class_name = function (id) 
	{
		var a = new Array();
		if (document.getElementById) 
		{
			var node = document.getElementsByTagName("body")[0];
			var re = new RegExp('\\b' + id + '\\b');
			var els = node.getElementsByTagName("*");
			for(var i=0, j=els.length; i<j; i++)
			{
				if(re.test(els[i].className))
					a.push(els[i]);
			} 
			delete re;
		}
		return a;
	}
}
dom.prototype = new tsdc();