// JavaScript Document



function createWall(){
  var x = 20;
  var z = 1;
  document.write('<table class="even" cellspacing="0" cellpadding="0"><tr><td class="first" id="element1">&nbsp;</td>');
  for (var i=2; i<720; i++){
    if(x/i==1){
      if(z%2>=1){
        //document.write('<table border="1" class="odd"><tr><td class="first"></td>');
        document.write('<td class="last" id="element'+i+'">&nbsp;</td></tr></table>');
        i=i+1;
      }else{
        document.write('<td class="last" id="element'+i+'">&nbsp;</td></tr></table>');
        i=i+1;
      }

      if(z%2>=1){
        document.write('<table class="odd" cellspacing="0" cellpadding="0"><tr><td class="first" id="element'+i+'">&nbsp;</td>');
        i=i+1;

      }else{
        document.write('<table class="even" cellspacing="0" cellpadding="0"><tr><td class="first" id="element'+i+'">&nbsp;</td>');
        i=i+1;
      }
      z++;     
      x=x+20;
    }
    document.write('<td id="element'+i+'">&nbsp;</td>');
    
  }
  document.write('<td class="last" id="element'+i+'">&nbsp;</td></tr></table>');
}