if(!document.getElementById)
{
	if(document.all)
	{
		accessObj = function()
		{
			if(typeof document.all[arguments[0]]!="undefined")
				return document.all[arguments[0]];
			else
				return null;
		}
	}
	else if(document.layers)
	{
		accessObj = function()
		{
			if(typeof document[arguments[0]]!="undefined")
				return document[arguments[0]];
			else
				return null;
		}
	}
}
else
{
	accessObj = function()
	{
		return document.getElementById(arguments[0]);
	}
}


function check_email(email)
{
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(email))
		return true
	else
		return false;
}