var checkflag = false;
	function check(form) {
		checkflag = ! checkflag;
		for(i = 0; i < form.length; i++)
		{
			if (form[i].type == 'checkbox')
				form[i].checked = checkflag;
		}
	}
	
	function addCheck(form) {
		var val = '';
		
		for(i = 0; i < form.length; i++)
		{
			if (form[i].type == 'checkbox')
			{
				if((form[i].value != 0) && (form[i].checked == true))
				{
					if(val != '')
						val = val + ',';
					val = val + form[i].value;
				}
			}
		}
		
		if(val != '')
		{
			document.frmBanner.cekZon.value = val;
			document.frmBanner.submit();
		}
		else
		{
			alert('Silahkan centang zona iklan yang Anda inginkan');
		}
	}
	
	function IsNumeric(strString)
	{
		var strValidChars = "0123456789.-";
		var strChar;
		var blnResult = true;
		
		if (strString.length == 0) return false;
		
		for (var i=0; i < strString.length; i++)
		{
			strChar = strString.charAt(i);
			if (strValidChars.indexOf(strChar) == -1)
			{
				blnResult = false;
			}
		}

		return blnResult;
	}

	function isEven(num) {
		return !(num % 2);
	}

	function checkPasang(form) 
	{
		var val = 'yes';
		
		for(var i = 0; i < form.length; i++)
		{
			if (form[i].type == 'select-one')
			{
					
				if (form[i].value == '')
				{
					val = '';
				}
			}
			
			if (form[i].type == 'text')
			{
				if (IsNumeric(form[i].value))
				{
					if ((form[i].value < 200) || (isEven(form[i].value)==false) || (form[i].value == ''))
					{
						val = '';
					}
				}
				else
				{
					val = '';	
				}
			}
		}
		
		if(val == 'yes')
		{
			return true;
		}
		else
		{
			alert('Ops! Harap pilih iklan yg akan di pasang atau isi tawaran anda minimal Rp. 200 atau tawaran yang anda sertakan tidak angka Genap');
			return false;
		}
	}