function dropCategory(obj){
	if(obj.className == "on"){
		obj.className = "off";
		document.frmLeft.objdrop.value = "";	
	}
	else{
		obj.className = "on";
		if(document.frmLeft.objdrop.value != ""){
			identity=document.getElementById(document.frmLeft.objdrop.value);
			identity.className = "off";
		}
		document.frmLeft.objdrop.value = obj.id;
	}
}
function CheckEmailAddress(Email)
{
	Email = Trim(Email);

	while (Email != '')
	{
		c = Email.charAt(0);	
		if (c==' ' || c=='<' || c==39 || c==':' || c=='.')
		{
			Email = Email.substr(1);
		}
		else
		{
			break;
		}
	}

	i = Email.indexOf('>');
	if (i==-1)
	{
		while (Email != '')
		{
			c = Email.charAt(Email.length - 1);
			if (c==' ' || c==39 || c=='.')
			{
				Email = Email.substr(0, Email.length - 1);
			}
			else
			{
				break;
			}
		}
	}
	else
	{
		Email = Email.substr(0, i);
	}

	if (Email.length > 96)
		return '';

	i = Email.lastIndexOf('@');
	j = Email.lastIndexOf('.');
	if (i < j)
		i = j;

	switch (Email.length - i - 1)
	{
	case 2:
		break;
	case 3:
		switch (Email.substr(i))
		{
		case '.com':
		case '.net':
		case '.org':
		case '.edu':
		case '.mil':
		case '.gov':
		case '.biz':
		case '.pro':
		case '.int':
			break;
		default:
			return '';
		}
		break;
	default:
		switch (Email.substr(i))
		{
		case '.name':
		case '.info':
			break;
		default:
			return '';
		}
		break;
	}

	Email = Email.toLowerCase();

	if (Email == '')
		return '';

	if (Email.indexOf(' ') != -1)
		return '';

	if (Email.indexOf('..') != -1)
		return '';

	if (Email.indexOf('.@') != -1)
		return '';

	if (Email.indexOf('@.') != -1)
		return '';

	if (Email.indexOf(':') != -1)
		return '';

	for (i=0; i < Email.length; i++)
	{
		c = Email.charAt(i);

		if (c >= '0' && c <= '9')
			continue;
		
		if (c >= 'a' && c <= 'z')
			continue;
		
		if ('`~!#$%^&*-_+=?/\\|@.'.indexOf(c) != -1)
			continue;

		return '';
	}

	if ((i=Email.indexOf('@'))==-1)
		return '';

	if (Email.substr(i + 1).indexOf('@')!=-1)
		return '';

	if (Email.charAt(0)=='.' || Email.charAt(Email.length - 1)=='.')
		return '';

	return Email;
}

function Trim(iStr)
{
	while (iStr.charCodeAt(0) <= 32)
	{
		iStr=iStr.substr(1);
	}

	while (iStr.charCodeAt(iStr.length - 1) <= 32)
	{
		iStr=iStr.substr(0, iStr.length - 1);
	}

	return iStr;
}
function EmailSubject(PageID)
{
	openMeExt('proveventdetail_email.asp?Id='.concat(PageID), 0, 0, 0, 0, 0, 0, 1, 1, 520, 525, 0, 0, '', 0);
	return false;
}

function openMeExt(vLink, vStatus, vResizeable, vScrollbars, vToolbar, vLocation, vFullscreen, vTitlebar, vCentered, vHeight, vWidth, vTop, vLeft, vID, vCounter)
{
	var sLink = (typeof(vLink.href) == 'undefined') ? vLink : vLink.href;

	winDef = '';
	winDef = winDef.concat('status=').concat((vStatus) ? 'yes' : 'no').concat(',');
	winDef = winDef.concat('resizable=').concat((vResizeable) ? 'yes' : 'no').concat(',');
	winDef = winDef.concat('scrollbars=').concat((vScrollbars) ? 'yes' : 'no').concat(',');
	winDef = winDef.concat('toolbar=').concat((vToolbar) ? 'yes' : 'no').concat(',');
	winDef = winDef.concat('location=').concat((vLocation) ? 'yes' : 'no').concat(',');
	winDef = winDef.concat('fullscreen=').concat((vFullscreen) ? 'yes' : 'no').concat(',');
	winDef = winDef.concat('titlebar=').concat((vTitlebar) ? 'yes' : 'no').concat(',');
	winDef = winDef.concat('height=').concat(vHeight-140).concat(',');
	winDef = winDef.concat('width=').concat(vWidth).concat(',');

	if (vCentered)
	{
		winDef = winDef.concat('top=').concat((screen.height - vHeight)/2).concat(',');
		winDef = winDef.concat('left=').concat((screen.width - vWidth)/2);
	}
	else
	{
		winDef = winDef.concat('top=').concat(vTop).concat(',');
		winDef = winDef.concat('left=').concat(vLeft);
	}

	if (typeof(vCounter) == 'undefined')
	{
		vCounter = 0;
	}

	if (typeof(vID) == 'undefined')
	{
		vID = 0;
	}
	
	if (vCounter)
	{
		sLink = 'http://srv.vnexpress.net/Counter/?n='.concat(vID).concat('&u=').concat(escape(sLink)).concat('&r=').concat(Math.random());
	}

	open(sLink, '_blank', winDef);

	if (typeof(vLink.href) != 'undefined')
	{
		return false;
	}
}