/*!
 * JavaScript Round Robin Generator
 * http://insert-title.com/
 *
 * Copyright 2010, Joe Maddalone
 * Dual licensed under the MIT or GPL Version 2 licenses.
 *
 */

  function RoundRobin(teams)
   {
   		var i;
        var ret = "";
        var round;
        var numplayers = 0;
        numplayers = parseInt(teams) + parseInt(teams % 2);
		numplayers = parseInt(numplayers);
		var a= new Array(numplayers-1);
		var alength = a.length;
		for(var x = 0; x<(numplayers);x++){a[x] = "Team " + (x + 1);}
		if(numplayers != parseInt(teams)){a[alength] = "BYE";}
        var pos;
        var pos2;
        ret = "----- ROUND #1-----<br />"
		for(var r1a=0; r1a<(numplayers/2); r1a++)
		{
        	ret += a[r1a] + " vs. " + a[alength - r1a] + "<br />"
		}
		for(round=2;round<alength+1;round++)
		{
            ret += "<br /><br />----- ROUND #" + round + "-----<br />"
            ret += a[0] + " vs. " + a[alength - (round - 1)] + "<br />"

			for(i = 2;i<(numplayers/2)+1;i++)
			{
                pos = (i + (round - 2))
                if(pos >= alength){pos = ((alength - pos)) * -1}
                else
                    {pos = (i + (round - 2))}

                pos2 = (pos - (round - 2)) - round
                if(pos2 > 0){
                    pos2 = (alength - pos2) * -1
				}

                if(pos2 < (alength * -1)){
                    pos2 += alength
				}

                ret += a[(alength + pos2)]
                ret += " vs. " + a[(alength - pos)] + "<br />"
			}

		}

       return ret
   }