var xmlHttpRequest = false;
			function createXMLHttpRequest() {
				if (window.XMLHttpRequest) { 
					xmlHttpRequest = new XMLHttpRequest();
				} else if (window.ActiveXObject) { 
					try { 
						xmlHttpRequest = new ActiveXObject("Msxml2.XMLHTTP");
					} catch (e1) { 
						try { 
							xmlHttpRequest = new ActiveXObject("Microsoft.XMLHTTP");
						} catch (e2) {
						 	xmlHttpRequest = false;
						}
					}
				}
			}
			function handleAjaxResult() { 
				if (xmlHttpRequest.readyState == 4) { 
					if (xmlHttpRequest.status == 200) {
						var responseStr = xmlHttpRequest.responseText;
    					document.getElementById("checkName").innerHTML = responseStr;
					} else { 
					}
				}
			}
			function executeAjaxCommand(){
				createXMLHttpRequest(); 
				var COM_Name=document.thisForm.COM_Name.value;
				var url = "/erm/checkName";
				xmlHttpRequest.open("POST", url, true); //如果用GET会有缓存问题
				xmlHttpRequest.setRequestHeader("content-type","application/x-www-form-urlencoded");
				xmlHttpRequest.onreadystatechange = handleAjaxResult; 
				xmlHttpRequest.send("COM_Name="+COM_Name);
			}

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