// 是否是整数
function onlyNum()
{
 if(!(event.keyCode==46)&&!(event.keyCode==8)&&!(event.keyCode==37)&&!(event.keyCode==39))
  if(!((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105)))
    event.returnValue=false;
}
//去除首尾空格
String.prototype.trim = function()  
{  
	return this.replace(/(^\s*)|(\s*$)/g, "");  
}  
function checkMail(email)
{
	var pattern = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;
	return pattern.test(email);
}
function jumpMenu(selObj,restore){ //v3.0
  if(selObj.options[selObj.selectedIndex].value!="#")
	  window.open(selObj.options[selObj.selectedIndex].value);
  if (restore) selObj.selectedIndex=0;
}