function open_popup(in_url,in_width,in_height) {
window.open(in_url,"_blank","status=yes,scrollbars=yes, resizable=no, width="+in_width+", height="+in_height+"");
}

function ok_mess(in_mess)
{
	if(in_mess) document.write('<DIV id=divmess style="DISPLAY: ; LEFT: 0px; POSITION: absolute; BOTTOM: 0px;" align=left><table bordercolor="#c0c0c0"  bgcolor="#ffffff" style="BORDER-COLLAPSE: collapse" border=1 cellpadding="0" cellspacing="0"><tr><td><font color=#ff0000>'+in_mess+'</font></td></tr></table></DIV><script>setTimeout("document.getElementById(\'divmess\').style.display=\'none\'",2000)<\/script>');
	//alert(in_mess);
}

function error_mess(in_mess)
{
	alert(in_mess);
	return false;
}

function confirm_mess(m)
{
	if (confirm(m))
	{
		return true;
	}
	else
	{
		return false;
	}
}

function checkform(form){
	e=form.getElementsByTagName("input");
	for(var i=0; i<e.length; i+=1) {
		r='require:'+e[i].name;
		if(document.getElementById(r)) if(!check(e[i].value)) return false;
	}
	e=form.getElementsByTagName("textarea");
	for(var i=0; i<e.length; i+=1) {
		if(document.getElementById(r)) if(!check(e[i].value)) return false;
	}
	//hàm kiểm tra
	function check(obj){
		if(obj=="") {
				alert(document.getElementById(r).innerHTML);
				e[i].style.backgroundColor="#FFFFCC";
				e[i].focus();
				return false;
		}
		else e[i].style.backgroundColor="";
		return true;
	}
	return true;
}

 function formsubmit(form){
			 	 data="";
				 e=form.getElementsByTagName("input");
				 for(var i=0; i<e.length; i+=1) {
				 	if(e[i].type=="checkbox") {
						value=(e[i].checked)?1:"";
					} else value=encodeURIComponent(e[i].value);
					data+=encodeURIComponent(e[i].name)+"="+value+"&"
				}
				e=form.getElementsByTagName("textarea");
				 for(var i=0; i<e.length; i+=1) {
					data+=encodeURIComponent(e[i].name)+"="+encodeURIComponent(e[i].value)+"&"
				}
				return data;
			 }
 function switchform(form,type){
				 e=form.getElementsByTagName("input");
				 for(var i=0; i<e.length; i+=1) {
				 	e[i].disabled=(type)?false:true;
				}
				e=form.getElementsByTagName("textarea");
				 for(var i=0; i<e.length; i+=1) {
					e[i].disabled=(type)?false:true;
				}
			 }
			 
function formatCurrency(num)
 {
    num = num.toString().replace(/\$|\,/g,'');
    if(isNaN(num))
    num = "0";
    sign = (num == (num = Math.abs(num)));
    num = Math.floor(num*100+0.50000000001);
    num = Math.floor(num/100).toString();
    for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
    num = num.substring(0,num.length-(4*i+3))+','+
    num.substring(num.length-(4*i+3));
    return (((sign)?'':'-') + num);
}