function checkByteLength(str,minlen,maxlen) {
	if (str == null) return false;
	var l = str.length;
	var blen = 0;
	for(i=0; i<l; i++) {
		if ((str.charCodeAt(i) & 0xff00) != 0) {
			blen ++;
		}
		blen ++;
	}
	if (blen > maxlen || blen < minlen) {
		return false;		
	}	
	return true;
}

function $(id) {
	return document.getElementById(id);
}

function trim(str) {
	return (str + '').replace(/(\s+)$/g, '').replace(/^\s+/g, '');
}

function isUndefined(variable) {
	return typeof variable == 'undefined' ? true : false;
}

function zoomtextarea(objname, zoom) {
	zoomsize = zoom ? 10 : -10;
	obj = $(objname);
	if(obj.rows + zoomsize > 0 && obj.cols + zoomsize * 3 > 0) {
		obj.rows += zoomsize;
		obj.cols += zoomsize * 3;
	}
}

function redirect(url) {
	window.location.replace(url);
}

function IsMatchRegExp(strString,strPattern) 
{ 
var pattern = strPattern; 
if(pattern.test(strString))
	return true;
else
	return false;

}

function collapse_change(menucount) {
	if($('menu_' + menucount).style.display == 'none') {
		$('menu_' + menucount).style.display = '';
		$('menuimg_' + menucount).src = './images/menu_reduce.gif';
	} else {
		$('menu_' + menucount).style.display = 'none';
		$('menuimg_' + menucount).src = './images/menu_add.gif';
	}
}

function zoomtextarea(objname, zoom) {
	zoomsize = zoom ? 10 : -10;
	obj = $(objname);
	if(obj.rows + zoomsize > 0 && obj.cols + zoomsize * 3 > 0) {
		obj.rows += zoomsize;
		obj.cols += zoomsize * 3;
	}
}

function checkall(form, prefix, checkall) {
	var checkall = checkall ? checkall : 'chkall';
	for(var i = 0; i < form.elements.length; i++) {
		var e = form.elements[i];
		if(e.name && e.name != checkall && (!prefix || (prefix && e.name.match(prefix)))) {
			e.checked = form.elements[checkall].checked;
		}
	}
}

function getFooterHtml(){
	document.writeln("<br /><div class='footer'>");
	document.writeln("<hr size='0' noshade color='#9DB3C5' width='80%'>");
	document.writeln("Powered by <a href='http://www.gzhuaqing.com' target='_blank' style='color: #666'><b> gzhuaqing.com</b></a> &nbsp;&copy; 2007-2008, ");
	document.writeln("<b><a href='http://www.gzhuaqing.com' target='_blank' style='color: #666'>¾ÞÓ¥¿Æ¼¼.</a></b>");
	document.writeln("</div>");
}

function mb_strlen(str) {
	var len = 0;
	for(var i = 0; i < str.length; i++) {
		len += str.charCodeAt(i) < 0 || str.charCodeAt(i) > 255 ? 2 : 1;
	}
	return len;
}

function getNewSubmitForm(iframeName){
	var submitForm;
	if (isUndefined(iframeName)||iframeName==''){
		submitForm = document.createElement("FORM");
		document.body.appendChild(submitForm);}
	else{
		submitForm = document.frames(iframeName).document.createElement("FORM");
		document.frames(iframeName).document.body.appendChild(submitForm);}
	submitForm.method = "POST";
	return submitForm;
}

function createNewFormElement(inputForm, elementName, elementValue){
	var newElement = inputForm.ownerDocument.createElement("<input name='"+elementName+"' type='hidden'>");
	inputForm.appendChild(newElement);
	newElement.value = elementValue;
	return newElement;
}



function DateAdd(interval,number,date){
	switch(interval.toLowerCase()){
		case "y": return new Date(date.setFullYear(date.getFullYear()+number));
		case "m": return new Date(date.setMonth(date.getMonth()+number));
		case "d": return new Date(date.setDate(date.getDate()+number));
		case "w": return new Date(date.setDate(date.getDate()+7*number));
		case "h": return new Date(date.setHours(date.getHours()+number));
		case "n": return new Date(date.setMinutes(date.getMinutes()+number));
		case "s": return new Date(date.setSeconds(date.getSeconds()+number));
		case "l": return new Date(date.setMilliseconds(date.getMilliseconds()+number));
	} 
}


function DateDiff(interval,date1,date2){
	var long = date2.getTime() - date1.getTime(); //Ïà²îºÁÃë
	switch(interval.toLowerCase()){
		case "y": return parseInt(date2.getFullYear() - date1.getFullYear());
		case "m": return parseInt((date2.getFullYear() - date1.getFullYear())*12 + (date2.getMonth()-date1.getMonth()));
		case "d": return parseInt(long/1000/60/60/24);
		case "w": return parseInt(long/1000/60/60/24/7);
		case "h": return parseInt(long/1000/60/60);
		case "n": return parseInt(long/1000/60);
		case "s": return parseInt(long/1000);
		case "l": return parseInt(long);
	}
}


function IsDate(dateval){
	var arr = new Array();
	
	if(dateval.indexOf("-") != -1){
		arr = dateval.toString().split("-");
	}else if(dateval.indexOf("/") != -1){
		arr = dateval.toString().split("/");
	}else{
		return false;
	}
	
	//yyyy-mm-dd || yyyy/mm/dd
	if(arr[0].length==4){
		var date = new Date(arr[0],arr[1]-1,arr[2]);
		if(date.getFullYear()==arr[0] && date.getMonth()==arr[1]-1 && date.getDate()==arr[2]){
			return true;
		}
	}
	//dd-mm-yyyy || dd/mm/yyyy
	if(arr[2].length==4){
		var date = new Date(arr[2],arr[1]-1,arr[0]);
		if(date.getFullYear()==arr[2] && date.getMonth()==arr[1]-1 && date.getDate()==arr[0]){
			return true;
		}
	}
	//mm-dd-yyyy || mm/dd/yyyy
	if(arr[2].length==4){
		var date = new Date(arr[2],arr[0]-1,arr[1]);
		if(date.getFullYear()==arr[2] && date.getMonth()==arr[0]-1 && date.getDate()==arr[1]){
			return true;
		}
	}
	
	return false;
}


function Request(Variable)
{
	var query = location.search;
	if (query != "")
	{
		query = query.split("?")[1];
		query = query.split("&");
		for (var i=0;i<query.length;i++)
		{
			var querycoll = query[i].split("=");
			if (querycoll.length == 2)
			{
				if (querycoll[0].toUpperCase() == Variable.toUpperCase())
				{
					return querycoll[1];
					break;
				}
			}
		}
	}
	return "";
}

function setTab(m,n){
var menu=document.getElementById("tab"+m).getElementsByTagName("li");
var div=document.getElementById("tablist"+m).getElementsByTagName("div");
var showdiv=[];
for (i=0; j=div[i]; i++){
if ((" "+div[i].className+" ").indexOf(" tablist ")!=-1){
showdiv.push(div[i]);
}
}
for(i=0;i<menu.length;i++)
{
menu[i].className=i==n?"now":"";
showdiv[i].style.display=i==n?"block":"none";
}


}