function NvScroll() {
	this.version = "0.2";
	this.name = "NvScroll";
	this.item = new Array();
	this.itemcount = 0;
	this.currentspeed = 0;
	this.scrollspeed = 50;
	this.pausedelay = 1000;
	this.pausemouseover = false;
	this.stop = false;
	this.type = 1;
	this.height = 100;
	this.width = 100;
	this.stopHeight = 0;	

	//Ãß°¡ º¯¼ö by saver
	this.urlButton = new Array();
	this.itemButtonCount = 0;
	this.useItemButton = false;			//¹öÆ°»ç¿ëÀ¯¹«
	this.useButtonMouseOver = false;	//¹öÆ°¸¶¿ì½º¿À¹ö»ç¿ëÀ¯¹«
	this.itemButton = "itemButton";		//¹öÆ°À̸§
	this.itemButtonOn = "on";			//¹öÆ°¿ÂÀ̹ÌÁö
	this.itemButtonOff = "off";			//¹öÆ°¿ÀÇÁÀ̹ÌÁö
	//Ãß°¡ º¯¼ö by saver
	
	//Ãß°¡¸Þ¼Òµå by saver
	this.addButton = function () {
		var text = arguments[0];
		this.urlButton[this.itemButtonCount] = text;
		this.itemButtonCount = this.itemButtonCount + 1;
	};

	this.buttonStart = function() {
		this.buttonDisplay();
	};
	
	this.imgForButtonStart = function() {
		this.imgForButtonDisplay();
	};

	this.imgForButtonDisplay = function(){
		for(var i = 0; i < this.itemcount; i++) {
			if ( this.type == 1) {
				document.write('<div id="'+this.name+'imgForButton'+i+'" style="display:none">');
				document.write(this.item[i]);
				document.write('</div>');
			}
		}
	};

	this.buttonDisplay = function() {
		for(var i = 0; i < this.itemcount; i++) {
			if(this.useItemButton){
				if(this.useButtonMouseOver)
					document.write('<td width="16">'+this.urlButton[i]+'<img id="'+this.itemButton+i+'" src="'+this.itemButtonOff+'" OnMouseOver="'+this.name+'.buttonover('+i+');" OnMouseOut="'+this.name+'.buttonout('+i+');" width="16" height="11"></a></td>');
				else
					document.write('<td width="16"><img id="'+this.itemButton+i+'" src="'+this.itemButtonOff+'" width="14" height="14" ></td>');
			}
		}
	};

	this.buttonover = function(count) {
		document.getElementById(this.itemButton+count).src = this.itemButtonOn;
		document.getElementById(this.name+'imgForButton'+count).style.display = "inline";
		document.getElementById(this.name).style.display = "none";
		this.onmouseover();

	}
	
	this.buttonout = function(count) {
		document.getElementById(this.itemButton+count).src = this.itemButtonOff;
		document.getElementById(this.name+'imgForButton'+count).style.display = "none";
		document.getElementById(this.name).style.display = "inline";
		this.onmouseout();
	}
	this.changeButton = function (count) {
		document.getElementById(this.itemButton+count).src = this.itemButtonOn;

		if( count == 0 ){
			document.getElementById(this.itemButton+(this.itemcount-1)).src = this.itemButtonOff;
		}else{
			var count2 = count - 1;
			document.getElementById(this.itemButton+count2).src = this.itemButtonOff;
		}

	};
	//Ãß°¡¸Þ¼Òµå ³¡ saver


	this.add =function () {
		var text = arguments[0];
		this.item[this.itemcount] = text;
		this.itemcount = this.itemcount + 1;
	};

	this.start = function () {
		this.display();
		this.currentspeed = this.scrollspeed;
		
		setTimeout(this.name+'.scroll()',this.currentspeed);
	};

	this.display =function () {
		//document.write('<div id="'+this.name+'" style="height:'+this.height+';width:'+this.width+';position:relative;overflow:hidden;top:0px;left:0px;" OnMouseOver="'+this.name+'.onmouseover();" OnMouseOut="'+this.name+'.onmouseout();">');
		//if(this.name == "hot_news")
		//	document.write('<div id="'+this.name+'" style="height:'+this.height+';width:'+this.width+';overflow:hidden;top:0px;left:0px;" OnMouseOver="'+this.name+'.onmouseover();" OnMouseOut="'+this.name+'.onmouseout();">');
		//else
			document.write('<div id="'+this.name+'" style="height:100%;width:100%;overflow:hidden;top:156px;left:20px;" OnMouseOver="'+this.name+'.onmouseover();" OnMouseOut="'+this.name+'.onmouseout();">');

		for(var i = 0; i < this.itemcount; i++) {
			if ( this.type == 1) {
				document.write('<div id="'+this.name+'item'+i+'"style="left:0px;width:'+this.width+';position:absolute;top:'+(this.height*i+1)+'px;">');
			
				document.write(this.item[i]);document.write('</div>');
				/*var ccc = '';
				if(this.name == "hot_news") {
					ccc = ccc + '<div id="'+this.name+'item'+i+'"style="left:0px;width:'+this.width+';position:absolute;top:'+(this.height*i+1)+'px;">';
					ccc = ccc + this.item[i];
					ccc = ccc + '</div>';
					alert(ccc);
				}*/
				
			} 
			else if ( this.type == 2 ) {
				document.write('<div id="'+this.name+'item'+i+'"style="left:'+(this.width*i+1)+'px;width:'+this.width+';position:absolute;top:0px;">');
				document.write(this.item[i]);document.write('</div>');
			}
					
		}
		document.write('</div>');

	};

	this.scroll = function () {
		this.currentspeed = this.scrollspeed;
		if ( !this.stop ) { 
			for (i = 0; i < this.itemcount; i++) {
				obj = document.getElementById(this.name+'item'+i).style;
				if ( this.type == 1 ) {
					obj.top = parseInt(obj.top) - 1;
					if ( parseInt(obj.top) <= this.height*(-1) )
						obj.top = this.height * (this.itemcount-1);
							if ( parseInt(obj.top) == 0 || ( this.stopHeight > 0 && this.stopHeight - parseInt(obj.top) == 0 ) ){
								this.currentspeed = this.pausedelay;
								if( this.useItemButton )
									this.changeButton(i); // Ãß°¡ by saver ÀÚµ¿À¸·Î ¹öÆ° ¿Â/¿ÀÇÁ üũ
							}
				} else if( this.type == 2 ) {
					obj.left = parseInt(obj.left) - 1;
						if ( parseInt(obj.left) <= this.left*(-1) ) 
							obj.left = this.left* (this.itemcount-1);
							if ( parseInt(obj.left) == 0 ){
								this.currentspeed = this.pausedelay;
								if( this.useItemButton )
									this.changeButton(i); // Ãß°¡ by saver ÀÚµ¿À¸·Î ¹öÆ° ¿Â/¿ÀÇÁ üũ
							}
				}
			}
		}
		window.setTimeout(this.name+".scroll()",this.currentspeed);
	};

	this.onmouseover = function () {
		if ( this.pausemouseover ) {
			this.stop = true;
		}
	};

	this.onmouseout = function () {
		if ( this.pausemouseover ) {
			this.stop = false;
		}
	};
}