document.writeln('<style type="text/css">');
document.writeln('<!--');
document.writeln('.saminputstyle{');
document.writeln('border: 2px solid #ff0000;');   //////提示入时的样色
document.writeln('}');
document.writeln('-->');
document.writeln('</style>');

function getstringlength(str){
  var endvalue=0;
  var sourcestr=new string(str);
  var tempstr;
  for (var strposition = 0; strposition < sourcestr.length; strposition ++) {
    tempstr=sourcestr.charat(strposition);
    if (tempstr.charcodeat(0)>255 || tempstr.charcodeat(0)<0) {
      endvalue=endvalue+2;
    } else {
      endvalue=endvalue+1;
    }
  }
  return(endvalue);
}
function trim(str){
  if(str==null) return "";
  if(str.length==0) return "";
  var i=0,j=str.length-1,c;
  for(;i<str.length;i++){
    c=str.charat(i);
    if(c!=' ') break;
  }
  for(;j>-1;j--){
    c=str.charat(j);
    if(c!=' ') break;
  }
  if(i>j) return "";
  return str.substring(i,j+1); 
}

//检查日期是否有效   2005-3-21
function validatedate(date1,format,alt){
	var datestring;
	var dilimeter;
	datestring = date1.value;
  if (datestring==null)
    return false; 
  if (dilimeter==' ' || dilimeter==null) 
    dilimeter = '-'; 
  var tempy=' '; 
  var tempm=' '; 
  var tempd=' '; 
  var temparray; 
  if (datestring.length<8 && datestring.length>10) 
    return false;  
  temparray = datestring.split(dilimeter); 
  if (temparray.length!=3) 
    return false; 
  if (temparray[0].length==4) 
  { 
     tempy = temparray[0]; 
     tempd = temparray[2]; 
  } 
  else 
  { 
     tempy = temparray[2]; 
     tempd = temparray[1]; 
   } 
  tempm = temparray[1]; 
  var tdatestring = tempy + ' /'+tempm + ' /'+tempd+' 8:0:0';//加八小时是因为我们处于东八区 
  var tempdate = new date(tdatestring); 
  if (isnan(tempdate)) 
    return false; 
  if (((tempdate.getutcfullyear()).tostring()==tempy) && (tempdate.getmonth()==parseint(tempm)-1) && (tempdate.getdate()==parseint(tempd))) 
  { 
    return true; 
  } 
  else 
 { 
  return false; 
  } 
  
} 


//去掉空格
function trim(str){
 if(str.charat(0) == " "){
  str = str.slice(1);
  str = trim(str); 
 }
 return str;
}


function validatedate1(date1,format,alt){
  var time=trim(date1.value);
  //alert(date1.value);
  if(time=="") return true;
  var reg=format;
  var reg=reg.replace(/yyyy/,"[0-9]{4}");
  var reg=reg.replace(/yy/,"[0-9]{2}");
  var reg=reg.replace(/mm/,"((0[1-9])|1[0-2])");
  var reg=reg.replace(/m/,"(([1-9])|1[0-2])");
  var reg=reg.replace(/dd/,"((0[1-9])|([1-2][0-9])|30|31)");
  var reg=reg.replace(/d/,"([1-9]|[1-2][0-9]|30|31))");
  var reg=reg.replace(/hh/,"(([0-1][0-9])|20|21|22|23)");
  var reg=reg.replace(/h/,"([0-9]|1[0-9]|20|21|22|23)");
  var reg=reg.replace(/mm/,"([0-5][0-9])");
  var reg=reg.replace(/m/,"([0-9]|([1-5][0-9]))");
  var reg=reg.replace(/ss/,"([0-5][0-9])");
  var reg=reg.replace(/s/,"([0-9]|([1-5][0-9]))");
  reg=new regexp("^"+reg+"$");
  if(reg.test(time)==false){//验证格式是否合法
    alert(alt);
    date.focus();
    return false;
  }
  return true;
}
function validatedategroup(year,month,day,alt){
  var array=new array(31,28,31,30,31,30,31,31,30,31,30,31);
  var y=parseint(year.value);
  var m=parseint(month.value);
  var d=parseint(day.value);
  var maxday=array[m-1];
  if(m==2){
    if((y%4==0&&y%100!=0)||y%400==0){
      maxday=29;
    }
  }
  if(d>maxday){
    alert(alt);
    return false;
  }
  return true;
}
function validatecheckbox(obj,alt){
  var rs=false;
  if(obj!=null){
    if(obj.length==null){
      return obj.checked;
    }
    for(i=0;i<obj.length;i++){
      if(obj[i].checked==true){
        return true;
      }
    }
  }
  alert(alt);
  return rs;
}
function validateradio(obj,alt){
	//alert(alt);
	//alert(obj.value);
  var rs=false;
  if(obj!=null){
    if(obj.length==null){
      return obj.checked;
    }
    for(i=0;i<obj.length;i++){
      if(obj[i].checked==true){
        return true;
      }
    }
  }
  alert(alt);
  return rs;
}
function validateselect(obj,alt){
  var rs=false;
  if(obj!=null){
    for(i=0;i<obj.options.length;i++){
      if ((obj.options[i].selected==true) && (obj.options[i].value!="")&& (obj.options[i].value!="all")){
        return true;
      }
    }
  }
  alert(alt);
  return rs;
}
function validateemail(email,alt,separator){
  var mail=trim(email.value);
  if(mail=="") return;
  var em;
  var myreg = /^[_a-z0-9]+@([_a-z0-9]+\.)+[a-z0-9]{2,3}$/;
  if(separator==null){
    if(myreg.test(email.value)==false){
      alert(alt);
      email.focus();
      return false;
    }
  }
  else{
    em=email.value.split(separator);
    for(i=0;i<em.length;i++){
      em[i]=em[i].trim();
      if(em[i].length>0&&myreg.test(em[i])==false){
        alert(alt);
        email.focus();
        return false;
      }
    }
  }
  return true;
}


//检查数字(可带小数点)是否有效 2005-3-21
function validatenum(num,alt)   
	{   
  var str = num;

  if(str=="") return;		
		var cnt3;   
		var len3;  
		var point3; 
   	
		cnt3=0;   
		point3=0;
		len3 = str.length;   
		for(var i=0; i<len3; i++) {   
			if(str.charat(i)>='0' && str.charat(i)<='9' )    
			{   
				cnt3++;   
			}else
			if  (str.charat(i)=='-')
			{
			  point3++;
			}
			  
		}   
		if (point3<2)
		{
	    if  ( cnt3+point3==len3)
	      return true; 
	    else
	    {
        alert(alt);	 
	  		return false;   	    	
	     }
	   }else{		   
      alert(alt);	 
			return false;   
	   
	   }

	} 
/////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////
function hasclass(ele,cls) {
	return ele.classname.match(new regexp('(\\s|^)'+cls+'(\\s|$)'));
  }
function addclass(ele,cls) {
	if (!this.hasclass(ele,cls)) ele.classname += " "+cls;
  }
function removeclass(ele,cls) {
	if (hasclass(ele,cls)) {
		var reg = new regexp('(\\s|^)'+cls+'(\\s|$)');
		ele.classname=ele.classname.replace(reg,' ');
	 }
  }

function inputcheck(thenobj){
	 if(thenobj.value.length==0){//是否空值
       alert(thenobj.title);  
	   addclass(thenobj,'saminputstyle');
	   //thenobj.focus();
	   //thenobj.style.background="#ff0000";
	   //thenobj.style.border="2px solid #ff0000";
       return false;
	}else{
		removeclass(thenobj,'saminputstyle');
    }
	
	 var rs=true;
	 if (thenobj.alt=="email"){//检查email
		  rs=validateemail(thenobj,"格式不正"); 
	 }
     if(rs==false){
       return false;
     }
	 
	  return true;
}

function checkform(formname)
   {
	 
    var checkobj = document.getelementsbytagname("input"); 
    var submitflag=true;
	   
    for(var i = 0;i < checkobj.length;i++){ 
	 if (checkobj[i].title.length>0 )
	 {
	    submitflag = inputcheck(checkobj[i]);
	    if (submitflag == false)
		{
	        break;
	    }
	  }
    }
	
	 if (submitflag == true)
	 {
		checkobj = document.getelementsbytagname("textarea"); 
		for(var i = 0;i < checkobj.length;i++){ 
		 if (checkobj[i].title.length>0 )
		 {
			submitflag = inputcheck(checkobj[i]);
			if (submitflag == false)
			{
				break;
				return false;
			}
		  }
		}
    }
	
	if (  submitflag == true )
	{
	   return true;
	   formname.submit(); 
	   
	}
	 else
	{
	  return false;
	}
}