function GetObj(objName){
	if(document.getElementById){
		return eval('document.getElementById("' + objName + '")');	}
	else if(document.layers){
		return eval("document.layers['" + objName +"']");	}
	else{	return eval('document.all.' + objName);	}
}

function newXMLHttpRequest() { 
	var xmlreq = false; 
	if (window.XMLHttpRequest) { 
		xmlreq = new XMLHttpRequest(); 
	} else if (window.ActiveXObject) { 
	
	try { 
		xmlreq = new ActiveXObject("Msxml2.XMLHTTP"); } 
	catch (e1) 
		{ 
		try { 
				xmlreq = new ActiveXObject("Microsoft.XMLHTTP"); 
			} catch (e2) { } 
		} 
	} 
	return xmlreq; 
}

//直接获取内容
function get_ajax_infos(postUrl)
{
	var objAjax = newXMLHttpRequest()
	objAjax.open("GET",postUrl,false)	//同步
	//objAjax.onreadystatechange = function(){callback(obj,objAjax);};
	objAjax.send(null);
	return objAjax.responseText;
	
	}
	
function submitForm(frm,url)
{
	alert(frm)
	return false;
eval("document." + frm + ".action='" + url + "'" ) ; 
//文字提交按钮
//frm 传入的可能是一个字符串:表单名称
}

function sel(a)
{ 
o=document.getElementsByName(a) 
for(i=0;i<o.length;i++) 
o[i].checked=event.srcElement.checked 
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function isNumber(s) {
	if (s != "") {
	  var food=0;
	  do{
		if ("0123456789".indexOf(s.substr(food,1)) <0){
			return false;
		}
		food ++;
	  }while(food < s.length)
	  return true;
  }else{
	  return false;
  }
}