Example dividend in multiple tx

contract MyContract {
    /* Constructor */
    function MyContract() {

    }

    bool public dividendDistribution;   // if true dividend distribution is happening
    uint public last;                   // if a dividend operation was happening but did not finish it stores the next index to iterate
    uint public dividendBalance;        // balance to share for dividends
    function dividend() {
      uint start;
      if(!dividendDistribution)  {
        dividendDistribution = true;
        dividendBalance = this.balance;
        start = 0;
      } else {
        start = last;
      }
      for(var i=start ; i< 1000;i++) {
        if(msg.gas<300000) {   // if I am running out of gas, I am saving status and exiting
          last = i;
          return;
        }
        address(i+1000).send(dividendBalance/1000);
      }
      dividendBalance = 0;
      dividendDistribution=false;
    }
}