//Detection of message function Feedback_onsubmit(){ if (document.Feedback.companyNAME.value==""){ alert("请填写公司名称"); document.Feedback.companyNAME.focus(); return false;} if (document.Feedback.companyTEL.value==""){ alert("请填写联系方式"); document.Feedback.companyTEL.focus(); return false;} if (document.Feedback.companyPERSON.value==""){ alert("请填写联系人"); document.Feedback.companyPERSON.focus(); return false;} if (document.Feedback.compnyContent.value==""){ alert("请填写项目需求"); document.Feedback.compnyContent.focus(); return false;} } //Switching layer function changeDIV(divcount,olddivall,newdiv,newdivclass,olddivclass,listdiv,listdivall){ for(var p=0;p