//判断Email是否正确
function isemail(strg)
{ 
     if(!(strg.indexOf("@")>1 && strg.indexOf(".")>1)) return 0; 
     if(strg.indexOf("@",strg.indexOf("@")+1)>0)  return 0; 
     var strarray=new Array("@@" , "@." , "..") 
     for(i=0;i<strarray.length;i++) 
       if(strg.indexOf(strarray[i])>0) return 0; 
     for(i=0;i<strg.length;i++) 
       if(strg.substr(i,1)<="," || strg.substr(i,1)=="/" || (strg.substr(i,1)>="["&&strg.substr(i,1)<="") || strg.substr(i,1)=="`" || (strg.substr(i,1)>=":"&&strg.substr(i,1)<="?") || strg.substr(i,1)>="{") return 0; 
     return 1; 
}

//判断是否由数字和－组成，用于电话号码。
function CheckTel(NUM)
{
    var i,j,strTemp;
    strTemp="0123456789-";
    if ( NUM.length== 0)
        return 0
    for (i=0;i<NUM.length;i++)
    {
        j=strTemp.indexOf(NUM.charAt(i));    
        if (j==-1)
        {
        //说明有字符不是数字
            return 0;
        }
    }
    //说明是数字
    return 1;
}

//信息反馈
function CheckUserForm(){
	if (document.feedback.Comane.value==""){
		alert("Company Name can not be empty！");
		document.feedback.Comane.focus();
		return false;
	}
	
	if (document.feedback.Somane.value==""){
		alert("Name can not be empty！");
		document.feedback.Somane.focus();
		return false;
	}
	
	if (document.feedback.Phone.value==""){
		alert("Phone can not be empty！");
		document.feedback.Phone.focus();
		return false;
	}
	if (document.feedback.Phone.value.length<8){
		alert("Telephone input error！");
		document.feedback.Phone.focus();
		return false;
	}
	if (CheckTel(feedback.Phone.value)==0){
		alert("Telephone input error！");
		document.feedback.Phone.focus();
		return false;
	}

	if (document.feedback.Email.value==""){
		alert("E-mail can not be empty！");
		document.feedback.Email.focus();
		return false;
	}
	if (isemail(feedback.Email.value)==0){
		alert("E-mail input error！");
		document.feedback.Email.focus();
		return false;
	}

	if (document.feedback.Title.value==""){
		alert("The title can not be empty！");
		document.feedback.Title.focus();
		return false;
	}
	
	if (document.feedback.Content.value==""){
		alert("Content can not be empty！");
		document.feedback.Content.focus();
		return false;
	}
}

// JavaScript Document
function showProSmallItem(Num){
	//proSmallItem_2.style.display="";
	eval("proSmallItem_"+Num+".style.display=''");
	}
function hiddenProSmallItem(Num){
	//proSmallItem_2.style.display="none";
	eval("proSmallItem_"+Num+".style.display='none'");
	}


// JavaScript Document
function showtopItem(topItemNum){
	//topItem1.className="top1_3";
	eval("topItem"+topItemNum+".className='top1_3'");
	}
function hiddentopItem(topItemNum){
	//thisItem.className="top1_4";
	eval("topItem"+topItemNum+".className='top1_4'");
	}
function showLeftItem(classId,LeftItemNum){
	for(i=0;i<=4;i++){
		eval("LeftItem"+LeftItemNum+"_"+i+".className='LeftItem"+classId+"_"+i+"'");
		}	
	}
function hiddenLeftItem(classId,LeftItemNum){
	for(i=0;i<=4;i++){
		eval("LeftItem"+LeftItemNum+"_"+i+".className='LeftItem"+classId+"_"+i+"'");
		}	
	}