func: function ICOSwapRate() constant returns(uint) { 
         if (creationTime + 1 weeks > now) { 
             return factorial_ICO; 
         } 
         else if (creationTime + 2 weeks > now) { 
             return (factorial_ICO - 30); 
         } 
         else if (creationTime + 4 weeks > now) { 
             return (factorial_ICO - 70); 
         } 
         else { 
             return 0; 
         } 
     }