function Slider() {
	var _this=null;
	this._lastlink=new Array;
	this.initialize();
}

Slider.prototype = ({
initialize: function() {
	return;
},
set_container: function(obj,colspan,id_num) {
	var lastlink=obj.className;
	while (obj && obj.nodeName != 'TR') {
		obj=obj.parentNode;
	}
	var parent_obj=obj.parentNode;
	if(obj.nextSibling && obj.nextSibling.className=='slider_base') {
		parent_obj.removeChild(obj.nextSibling);
		if(this._lastlink[id_num] == lastlink) {
			this._lastlink.splice(id_num,1);
			return false;
		}
	}
	this._lastlink[id_num]=lastlink;
	var tr=document.createElement('TR');
	var td=document.createElement('TD');
	var div=document.createElement('DIV');
	var div_round=document.createElement('DIV');
	var div_container=document.createElement('DIV');
	td.colSpan=colspan;
	tr.className='slider_base';
	div.className='slider_list';
	div_round.className='slider_round';
	div_container.className='slider_container';
	div_round.appendChild(div_container);
	div.appendChild(div_round);
	td.appendChild(div);
	tr.appendChild(td);
	if(obj.nextSibling) {
		parent_obj.insertBefore(tr, obj.nextSibling);
	} else {
		parent_obj.appendChild(tr);
	}
	this.container=div_container;
	return true;
},
clone_tag: function(obj) {
	var tag=document.createElement(obj.tagName);
	obj.parentNode.appendChild(tag);
	tag.className=obj.className;
	tag.style.display='none';
	return tag;
}
});