function isEmail(s)
{
	var reg = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;
 	if (reg.test(s)){
		return true;
	}else{
		return false;
	}
}

function showDialog(vLink, vWidth, vHeight)
{
	return showWindow(vLink, false, false, false, false, false, false, true, true, vWidth, vHeight, 0, 0);
}

function showWindow(vLink, vStatus, vResizeable, vScrollbars, vToolbar, vLocation, vFullscreen, vTitlebar, vCentered, vWidth, vHeight, vTop, vLeft)
{
	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).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);
	}

	open(sLink, '_blank', winDef);

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