//E-mailµØÖ·ÑéÖ¤: 
 function test_email(strEmail) { 
  var myReg = /^[_a-z0-9]+@([_a-z0-9-]+\.)+[a-z0-9]{2,3}$/; 
  if(myReg.test(strEmail)) return true; 
  return false; 
 } 

function strlen(str)
{
	var len;
	var i;
	len = 0;
	for (i=0;i<str.length;i++)
	{
	if (str.charCodeAt(i)>255) len+=2; else len++;
	}
	return len;
}
 


// A utility function that returns true if a string contains only 
// whitespace characters.
function isblank(s)
{
    for(var i = 0; i < s.length; i++) {
        var c = s.charAt(i);
        if ((c != ' ') && (c != '\n') && (c != '\t')) return false;
    }
    return true;
}
// This is the function that performs form verification. It will be invoked
// from the onSubmit() event handler. The handler should return whatever
// value this function returns.
function verify(f)
{
    var msg;
    var empty_fields = "";
    var errors = "";


    // Loop through the elements of the form, looking for all 
    // text and textarea elements that don't have an "optional" property
    // defined. Then, check for fields that are empty and make a list of them.
    // Also, if any of these elements have a "min" or a "max" property defined,
    // then verify that they are numbers and that they are in the right range.
    // Put together error messages for fields that are wrong.
    for(var i = 0; i < f.length; i++) {
        var e = f.elements[i];
        if (((e.type == "text") || (e.type == "textarea")) && !e.optional) {
            // first check if the field is empty
            if ((e.value == null) || (e.value == "") || isblank(e.value)) {
                empty_fields += "\n          " + e.name;
                continue;
            }
            // Now check for fields that are supposed to be numeric.
            if (e.numeric || (e.min != null) || (e.max != null)) { 
                var v = parseFloat(e.value);
                if (isNaN(v) || 
                    ((e.min != null) && (v < e.min)) || 
                    ((e.max != null) && (v > e.max))) {
                    errors += "- The field " + e.name + " must be a number";
                    if (e.min != null) 
                        errors += " that is greater than " + e.min;
                    if (e.max != null && e.min != null) 
                        errors += " and less than " + e.max;
                    else if (e.max != null)
                        errors += " that is less than " + e.max;
                    errors += ".\n";
                }
            }
        }
    }
    // Now, if there were any errors, then display the messages, and
    // return true to prevent the form from being submitted. Otherwise
    // return false.
    if (!empty_fields && !errors) return true;
    msg  = "______________________________________________________\n\n"
    msg += "The form was not submitted because of the following error(s).\n";
    msg += "Please correct these error(s) and re-submit.\n";
    msg += "______________________________________________________\n\n"
    if (empty_fields) {
        msg += "- The following required field(s) are empty:" 
                + empty_fields + "\n";
        if (errors) msg += "\n";
    }
    msg += errors;
    alert(msg);
    return false;
}

function hasblank(s)
{
    for(var i = 0; i < s.length; i++) {
        var c = s.charAt(i);
        if ((c == ' ') || (c == '\n') || (c == '\t')) return true;
    }
    return false;
}

function isValid(s)
{
    for(var i = 0; i < s.length; i++) {
        var c = s.charAt(i);
		if((c<'a'||c>'z')&&(c<'A'||c>'Z')&&(c<'0'||c>'9')&&(c!='_')){
               return false;
        }

    }
    return true;
}

function isNumLet(s)
{
    for(var i = 0; i < s.length; i++) {
        var c = s.charAt(i);
		if((c<'a'||c>'z')&&(c<'A'||c>'Z')&&(c<'0'||c>'9')){
               return false;
        }

    }
    return true;
}

function isContainsSplit(s)
{
    for(var i = 0; i < s.length; i++) {
        var c = s.charAt(i);
        if ((c == '|')) return false;
    }
    return true;
}

function isCap(s)
{
    for(var i = 0; i < s.length; i++) {
        var c = s.charAt(i);
		if(c<'A'||c>'F'){
               return false;
        }

    }
    return true;
}

function isUserId(s)
{
    for(var i = 0; i < s.length; i++) {
        var c = s.charAt(i);
		if((c<'a'||c>'z')&&(c<'A'||c>'Z')&&(c<'0'||c>'9')&&(c!='_')&&(c!='.')){
               return false;
        }

    }
    return true;
}

function isNum(s)
{
    for(var i = 0; i < s.length; i++) {
        var c = s.charAt(i);
		if(c<'0'||c>'9'){
               return false;
        }

    }
    return true;
}

function isErrorStr(s)
{
	var re=/[()'"%:|$;]/;
 	var e = re.test(s);
 	if(e) {
  		return true;
 	}
 	
 	return false;
}