function HrdScroll(){
    this.version = "1.0";
    this.name = "HrdScroll";
    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.i=0;
    this.rowCount = 2;
    this.targetDiv = null;

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

    this.clearItem = function () {
	    this.item = new Array();
	    this.itemcount = 0;
    };
    

    this.start = function () {
	    if (this.itemcount == 1) {
    		this.add(this.item[0]);
	    }
	    if (this.targetDiv != null) {
		    document.getElementById(this.targetDiv).innerHTML = this.str_ret();
	    }else {
		    this.display();
	    }
	    this.currentspeed = this.scrollspeed;
	    if ( this.type == 1 || this.type == 2 ) {
		    this.stop = true;
		    setTimeout(this.name+'.scroll()',this.currentspeed);
		    window.setTimeout(this.name+".stop = false", this.pausedelay);
	    } else if ( this.type == 3 ) {
		    this.stop = true;
		    setTimeout(this.name+'.rolling()',this.currentspeed);
		    window.setTimeout(this.name+".stop = false", this.pausedelay);
	    }
    };
    

    this.display = function () {
	    document.write('<div id="'+this.name+'" style="height:'+this.height+'; width:'+this.width+'; position:relative; overflow:hidden; " 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/this.rowCount)*i)+'px; ">');
			    document.write(this.item[i]);
			    document.write('</div>');
		    } else if ( this.type == 2 || this.type == 3 ) {
			    document.write('<div id="'+this.name+'item'+i+'"style="left:'+(this.width*i)+'px; width:'+this.width+'; position:absolute; top:0px; ">');
			    document.write(this.item[i]);
			    document.write('</div>');
		    }
	    }
	    document.write('</div>');
    };
    
    this.str_ret = function() {
        var strTemp = '';
	    strTemp = '<div id="'+this.name+'" style="height:'+this.height+'; width:'+this.width+'; position:relative; overflow:hidden; " OnMouseOver="'+this.name+'.onmouseover(); " OnMouseOut="'+this.name+'.onmouseout(); ">'
	    for(var i = 0; i < this.itemcount; i++) {	    
		    if ( this.type == 1 ) {
			    strTemp += '<div id="'+this.name+'item'+i+'"style="left:0px; width:'+this.width+'; position:absolute; top:'+((this.height/this.rowCount)*i)+'px; ">'
			    strTemp += this.item[i]
			    strTemp += '</div>'
		    } else if ( this.type == 2 || this.type == 3 ) {
			    strTemp += '<div id="'+this.name+'item'+i+'"style="left:'+(this.width*i)+'px; width:'+this.width+'; position:absolute; top:0px; ">'
			    strTemp += this.item[i]
			    strTemp += '</div>'
		    }
	    }
	    strTemp += '</div>'
	    return strTemp;
    }

    this.scroll = function () {
	    if ( this.pause == true ) {
		    window.setTimeout(this.name+".scroll()",this.pausedelay);
		    this.pause = false;
	    } else {
		    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/this.rowCount * (-1) ) obj.top = this.height/this.rowCount * (this.itemcount-1);
					    if ( parseInt(obj.top) == 0 ) this.currentspeed = this.pausedelay;
				    } else if ( this.type == 2 ) {
					    obj.left = parseInt(obj.left) - 1;
					    if ( parseInt(obj.left) <= this.width * (-1) ) obj.left = this.width * (this.itemcount-1);
					    if ( parseInt(obj.left) == 0 ) this.currentspeed = this.pausedelay;
				    }
			    }
		    }
		    window.setTimeout(this.name+".scroll()",this.currentspeed);
	    }
    };

    this.rolling = function () {
	    if ( this.stop == false  ) {
		    this.next();
	    }
	    window.setTimeout(this.name+".rolling()",this.scrollspeed);
    }

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

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

    this.next = function() {
	    for (i = 0; i < this.itemcount; i++) {
		    obj = document.getElementById(this.name+'item'+i).style;
		    if ( parseInt(obj.left) < 1 ) { 
			    width = this.width + parseInt(obj.left);
			    break;
		    }
	    }
	    for (i = 0; i < this.itemcount; i++) {
		    obj = document.getElementById(this.name+'item'+i).style;
		    if ( parseInt(obj.left) < 1 ) { 
			    obj.left = this.width * (this.itemcount-1);
		    } else {
			    obj.left = parseInt(obj.left) - width;
		    }
	    }
    }

    this.prev = function() {
	    for (i = 0; i < this.itemcount; i++) {
		    obj = document.getElementById(this.name+'item'+i).style;
		    if ( parseInt(obj.left) < 1 ) { 
			    width = parseInt(obj.left) * (-1);
			    break;
		    }
	    }
	    if ( width == 0 ) {
		    total_width = this.width * (this.itemcount-1);
		    for (i = 0; i < this.itemcount; i++) {
			    obj = document.getElementById(this.name+'item'+i).style;
			    if ( parseInt(obj.left) + 1 > total_width ) { 
				    obj.left = 0;
			    } else {
				    obj.left = parseInt(obj.left) + this.width;
			    }
		    }
	    } else {
		    for (i = 0; i < this.itemcount; i++) {
			    obj = document.getElementById(this.name+'item'+i).style;
			    if ( parseInt(obj.left) < 1 ) { 
				    obj.left = 0;
			    } else {
				    obj.left = parseInt(obj.left) + width;
			    }
		    }
	    }
    }

    this.unext = function () {
	    this.onmouseover();
	    this.next();
	    window.setTimeout(this.name+".onmouseout()",this.pausedelay);
    }

    this.uprev = function () {
	    this.onmouseover();
	    this.prev();
	    window.setTimeout(this.name+".onmouseout()",this.pausedelay);
    }
}
//