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;	

	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();">');

		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>');
			} 
			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;
							}
				} 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;
							}
				}
			}
		}
		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;
		}
	};
}