function NvChange() {

	this.version = "0.1";
	this.name = "NvChange";
	this.item = new Array();
	this.itemcount = 0;
	this.itemoffset = 0;
	this.item_i = new Array();
	this.item_icount = 0;
	this.item_ioffset = 0;
	this.currentspeed = 0;
	this.scrollspeed = 50;
	this.pausedelay = 1000;
	this.pausemouseover = false;
	this.stop = 0;
	this.height = 100;
	this.heightGap = 0;
	this.width = 100;
	this.height_i = 100;
	this.width_i = 100;
	this.stopHeight=0;
	this.count=0;
	this.flag=true;
	this.position="absolute";
	this.item_position="absolute";

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

	this.addImage = function () {
		var text = arguments[0];
		this.item_i[this.item_icount] = text;
		this.item_icount = this.item_icount + 1;
	};

	this.start = function () {
		this.display();
		this.currentspeed = this.scrollspeed;
		obj = document.getElementById(this.name+'item0').style;
		obj.display='block';
		this.count++;
		setTimeout(this.name+'.scroll()',this.currentspeed);
	};

	this.ready = function () {
		now = new Date(); ran = now % this.item_icount;
		temp = this.item_i[ran]; this.item_i[ran] = this.item_i[0]; this.item_i[0] = temp;
		this.displayImage();
		obj_i = document.getElementById(this.name+'item_i0').style;
		obj_i.display='block';
	};

	this.display = function () {
		document.write('<div id="'+this.name+'" style="height:'+this.height+';width:'+this.width+';position:'+this.position+';overflow:hidden;" OnMouseOver="'+this.name+'.onmouseover();" OnMouseOut="'+this.name+'.onmouseout();">');
		for(var i = 0; i < this.itemcount; i++) {
				document.write('<div id="'+this.name+'item'+i+'"style="left:0px; width:'+this.width+';position:'+this.item_position+'; display:none; ">');
				document.write(this.item[i]);
				document.write('</div>');
		}
		document.write('</div>');
	};

	this.displayImage = function () {
		document.write('<div id="'+this.name+'_i" style="left:0; height:'+this.height_i+';width:'+this.width_i+';position:relative;overflow:hidden;" OnMouseOver="'+this.name+'.onmouseover();" OnMouseOut="'+this.name+'.onmouseout();">');
		for(var i = 0; i < this.item_icount; i++) {
			document.write('<div id="'+this.name+'item_i'+i+'"style="left:0px; width:'+this.width_i+'; display:none; ">');
			document.write(this.item_i[i]);
			document.write('</div>');
		}
		document.write('</div>');
	};

	this.scroll = function () {
		this.currentspeed = this.scrollspeed;
		if ( !this.stop ) {
			this.imageChange();
		}
		window.setTimeout(this.name+".scroll()",this.currentspeed);
	};


	this.imageChange = function ()
	{
		for (k = 0; k < this.item_icount; k++) {
			obj_i = document.getElementById(this.name+'item_i'+k).style;
			if (this.count % this.item_icount == k) {
				obj_i.display = 'block';
			} else {
				obj_i.display = 'none';
			}
		}
		for (k = 0; k < this.itemcount; k++) {
			obj = document.getElementById(this.name+'item'+k).style;
			if (this.count % this.itemcount == k) {
				obj.display = 'block';
			} else {
				obj.display = 'none';
			}
		}
		this.count++;
	}

	this.onmouseover = function ()
	{
		if ( this.pausemouseover ) {
			this.stop = 1;
		}
	};
		for (k = 0; k < this.item_icount; k++) {
			obj_i = document.getElementById(this.name+'item_i'+k).style;
			if (this.count % this.item_icount == k) {
				obj_i.display = 'block';
			} else {
				obj_i.display = 'none';
			}
		}

	this.onmouseout = function ()
	{
		if ( this.pausemouseover ) {
			this.stop = 0;
		}
	};

	this.up = function ()
	{
		var i;
		this.stop++;

		if ( this.itemcount <= this.itemoffset )
			this.itemoffset = this.itemoffset % this.itemcount;

		for (i = 0; i < this.item_icount; i++) {
			obj_i = document.getElementById(this.name+'item_i'+i).style;
			if ( obj_i.display == "block" ) {this.item_ioffset = i+1;obj_i.display="none";}
		}

		if (this.item_icount > 0) {
			if (this.item_ioffset < this.item_icount) {
				obj_i = document.getElementById(this.name+'item_i'+this.item_ioffset).style;
				obj_i.display = "block";
			} else {
				obj_i = document.getElementById(this.name+'item_i0').style;
				obj_i.display = "block";
			}
		}
		for (i = 0; i < this.itemcount; i++) {
			obj = document.getElementById(this.name+'item'+i).style;
			if ( obj.display == "block" ) {this.itemoffset = i+1;obj.display="none";}
		}
		if (this.itemoffset < this.itemcount) {
			obj = document.getElementById(this.name+'item'+this.itemoffset).style;
			obj.display = "block";
		} else {
			obj = document.getElementById(this.name+'item0').style;
			obj.display = "block";
		}
		window.setTimeout(this.name + ".stop--;",this.pausedelay);
		//this.stop--;
	}

}