var preloaded = new Array();
function preload_images() {
    for (var i = 0; i < arguments.length; i++){
        preloaded[i] = document.createElement('img');
        preloaded[i].setAttribute('src',arguments[i]);
    };
};
preload_images('/template/images/mainbox_01.gif','/template/images/mainbox_02.gif','/template/images/mainbox_03.gif',
'/template/images/submenu_bg.png','/template/images/submenu_bg_hover.gif','/template/images/submenu_bg_hover.png',
'/template/images/thai.gif','/template/images/mainbg.jpg','/template/images/useronline.gif');

function newXmlHttp()
{
	var xmlhttp = false;
	try{
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	}catch(e){
		try{
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		}catch(e){
			xmlhttp = false;
		}
	}
	if(!xmlhttp && document.createElement){
		xmlhttp = new XMLHttpRequest();
	}
	return xmlhttp;
}
function ajax(mode){
	///alert(mode);
	var url = "/ajax.php"+mode;
	xmlhttp = newXmlHttp();
	xmlhttp.open("GET", url, false);
	xmlhttp.send(null);
	var response = xmlhttp.responseText;
	if(response != "")
	{
		return response;
	}else
		return false;
}
function Isvalidusername(elementname,output){
	var elements = document.getElementById(elementname+"verify");
	var input = document.getElementById(elementname);
	var vals = input.value;
	var result = ajax("?mode=checkusername&value="+vals);
	if(result){
		input.readOnly=true
		elements.disabled=true;
		IdHTMLInsert(output,result);
	}else{
		IdHTMLInsert(output,result);
	}
}
function Isvalidemail(elementname,output){
	var elements = document.getElementById(elementname+"verify");
	var input = document.getElementById(elementname);
	var vals = input.value;
	var result = ajax("?mode=checkemail&value="+vals);
	if(result){
		input.readOnly=true
		elements.disabled=true;
		IdHTMLInsert(output,result);
	}else{
		IdHTMLInsert(output,result);
	}
}
function IdHTMLInsert(elementname,value){
	var elements = document.getElementById(elementname);
	elements.innerHTML = value;
}
function changecaptcha(elements){
	var rand= Math.round(Math.random()*100);
	if(elements){
		elements.src = "/captcha.php?isd="+rand;
	}
}
function zoomImg(path,name,w,h){
	zoom=window.open('','zoom','width='+w+',height='+h)
	zoom.document.write("<style>body{margin:0;}</style><img src='"+path+"' border='0'>")
	zoom.focus();
}
function popUp(URL,WIDTH,HEIGHT){
    day = new Date();
    id = day.getTime();
    eval("page" + id + " = window.open(URL, 'sahacogen_popup', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=1,width="+WIDTH+",height="+HEIGHT+",left = 440,top = 250');");
}
function changelanguage(){
	document.langform.submit();
}