function  btnRun_click()
			 {	          
				var url = "../services/otherServe.aspx?type=run20";			
				var strPre1 = trim(document.all["txtPre1"].value);
				var strPre2 = trim(document.all["txtPre2"].value);
				if (strPre1 == "" )
				{
					alert("请输入第一个数字!");
					document.all["txtPre1"].focus();
					
					return;
				}
				if (strPre2 == "" )
				{
					alert("请输入第二个数字!");
					document.all["txtPre2"].focus();
				
					return;
				}	
				var xml = "<dataInfo>"+
					"<strPre1>" + strPre1 + "</strPre1>" + 
					"<strPre2>" + strPre2 + "</strPre2>" + 		          
					"</dataInfo>";
					
					
				var strResult = xmlhttp_sendData(url,xml);
				if (strResult != "error")
				{
					var oDiv = window.document.createElement("DIV");
					oDiv.innerHTML = strResult;
					var info = oDiv.children[0].innerText;
					var arrInfo = info.split(':');
					var state = arrInfo[0];
					var result = arrInfo[1];
					//如果已经注册成功,则转向登录页面
					if (state == "true")
					{
						document.all["txtHalf"].value = result;
					}
					else
					{
						alert(result);					
					}
				
				}//if			
				 
			}
			
			function txtHalf_onmouseover()
			{		    
				document.all["txtHalf"].select();
			}