HashTable实例 public class HashTable_msg { public HashTable_msg() { String sum_sql="select

				function ObjectAD() {
				  /* Define Variables*/
				  this.ADID        = 0;
				  this.ADType      = 0;
				  this.ADName      = "";
				  this.ImgUrl      = "";
				  this.ImgWidth    = 0;
				  this.ImgHeight   = 0;
				  this.FlashWmode  = 0;
				  this.LinkUrl     = "";
				  this.LinkTarget  = 0;
				  this.LinkAlt     = "";
				  this.Priority    = 0;
				  this.CountView   = 0;
				  this.CountClick  = 0;
				  this.InstallDir  = "";
				  this.ADDIR       = "";
				}
				
				function CodeZoneAD(_id) {
				  /* Define Common Variables*/
				  this.ID          = _id;
				  this.ZoneID      = 0;
				
				  /* Define Unique Variables*/
				
				  /* Define Objects */
				  this.AllAD       = new Array();
				  this.ShowAD      = null;
				
				  /* Define Functions */
				  this.AddAD       = CodeZoneAD_AddAD;
				  this.GetShowAD   = CodeZoneAD_GetShowAD;
				  this.Show        = CodeZoneAD_Show;
				
				}
				
				function CodeZoneAD_AddAD(_AD) {
				  this.AllAD[this.AllAD.length] = _AD;
				}
				
				function CodeZoneAD_GetShowAD() {
				  if (this.ShowType > 1) {
				    this.ShowAD = this.AllAD[0];
				    return;
				  }
				  var num = this.AllAD.length;
				  var sum = 0;
				  for (var i = 0; i < num; i++) {
				    sum = sum + this.AllAD[i].Priority;
				  }
				  if (sum 				  var rndNum = Math.random() * sum;
				  i = 0;
				  j = 0;
				  while (true) {
				    j = j + this.AllAD[i].Priority;
				    if (j >= rndNum) {break;}
				    i++;
				  }
				  this.ShowAD = this.AllAD[i];
				}
				
				function CodeZoneAD_Show() {
				  if (!this.AllAD) {
				    return;
				  } else {
				    this.GetShowAD();
				  }
				
				  if (this.ShowAD == null) return false;
				  document.write(this.ShowAD.ADIntro);
				}
				
				var ZoneAD_66 = new CodeZoneAD("ZoneAD_66");
				ZoneAD_66.ZoneID      = 66;
				ZoneAD_66.ZoneWidth   = 0;
				ZoneAD_66.ZoneHeight  = 0;
				ZoneAD_66.ShowType    = 1;
				
				var objAD = new ObjectAD();
				objAD.ADID           = 71;
				objAD.ADType         = 4;
				objAD.ADName         = "内容页300X300";
				objAD.ImgUrl         = "";
				objAD.InstallDir     = "/";
				objAD.ImgWidth       = 0;
				objAD.ImgHeight      = 0;
				objAD.FlashWmode     = 0;
				objAD.ADIntro        = "		\n\r		\n\r		 \n\r";
				objAD.LinkUrl        = "";
				objAD.LinkTarget     = 1;
				objAD.LinkAlt        = "";
				objAD.Priority       = 1;
				objAD.CountView      = 0;
				objAD.CountClick     = 0;
				objAD.ADDIR          = "AD";
				ZoneAD_66.AddAD(objAD);
				
				ZoneAD_66.Show();