function ckform(FormName,FormDo)
{
  if(FormDo == "cknull")
  {
    for(var i = 0;i <= document.forms[FormName].length - 1;i++)
    {
      if(document.forms[FormName].elements[i].title != "" && document.forms[FormName].elements[i].value == "")
      {
       alert(document.forms[FormName].elements[i].title);
       return false;
       document.forms[FormName].elements[i].focus();
      }
    }
	return true;
  }
  if(FormDo == "reset")
  	for(var i = 0;i <= document.forms[FormName].length - 1;i++)
  	{
  		if(document.forms[FormName].elements[i].type == "text")
  		{	document.forms[FormName].elements[i].value = "";	}
  	}
}
function cknan(FormName,CkElement)
{
	if(isNaN(document.forms[FormName].elements[CkElement].value))
	{
		alert("输入不是数字,请输入数字数据!");
		document.forms[FormName].elements[CkElement].value = "";
		document.forms[FormName].elements[CkElement].select();
	}
}

function ckurl(msgstr,urlstr)
{
	if(confirm(msgstr))
	{
		location.href=urlstr;
	}
	else
	{
		return false;
	}
}