function trim(Key)
{
	while(''+Key.charAt(Key.length-1)==' ')
		{ Key=Key.substring(0,Key.length-1); }
	return Key;
}

function str_replace(search,replace,subject)
{
	result = '';			// the replace string
	i=0;

	while (i<subject.length)
	{
		if ( search == subject.substring(i,i+search.length) )
			{ result = result + replace; i=i+search.length; }
		else { result = result + subject.charAt(i); i=i+1; }
	}
	return result;
}

function replace_tags(subject)
{
	//inlocuieste tag-urile, cu codurile asci ale lor
	rezult = subject;
	rezult = str_replace('"','&quot;',rezult);
	rezult = str_replace('<','&lt;',rezult);
	rezult = str_replace('>','&gt;',rezult);

	return rezult;
}
function emailCheck (emailStr)
{
	var emailPat=/^(.+)@(.+)$/
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
	var validChars="\[^\\s" + specialChars + "\]"
	var quotedUser="(\"[^\"]*\")"
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
	var atom=validChars + '+'
	var word="(" + atom + "|" + quotedUser + ")"
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")

	var matchArray=emailStr.match(emailPat)

	if (matchArray==null)	{return false}

	var user=matchArray[1]
	var domain=matchArray[2]

	if (user.match(userPat)==null)	{return false}

	var IPArray=domain.match(ipDomainPat)

	if (IPArray!=null)
	{
		for (var i=1;i<=4;i++)
		{
			if (IPArray[i]>255) {return false}
		}
		return true
	}

	var domainArray=domain.match(domainPat)

	if (domainArray==null)	{return false}

	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length

	if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3)
	{return false}

	if (len<2)	{return false}

	return true;
}