function checkemail (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>4)
	{
		return false;
	}

	if (len<2)
	{
		return false;
	}

	return true;
}

function adjustElementToMouse(objName, intOffsetY){
	//objName er et javascript element - IKKE bare en streng
	//intOffsetY er ikke påkrævet
	objName.style.left=event.clientX-event.offsetX+'px';
	if(intOffsetY==null)
		objName.style.top=document.body.scrollTop+event.clientY-event.offsetY+'px';
	else
		objName.style.top=document.body.scrollTop+event.clientY-event.offsetY+intOffsetY+'px';
}

function ChangedisplayStateOfElement(oElement1)
{
	if(oElement1 != null)
	{
		if(oElement1.style.visibility=='visible')
		{
			oElement1.style.visibility='hidden';
			oElement1.style.display='none';
		}
		else
		{
			oElement1.style.visibility='visible';
			oElement1.style.display='';
		}
	}
}

function TurnOffdisplayStateOfElement(strId)
{
	if(!document.all[strId].contains(event.toElement))
	{
		if(document.activeElement.id != "searchstring")
		{
			document.all[strId].style.visibility	=	"hidden";
			document.all[strId].style.display='none';
		}
	}
}

function TurnOndisplayStateOfElement(oElement1)
{
	if(oElement1 != null)
	{
		if(oElement1.style.visibility=='hidden')
		{
			oElement1.style.visibility='visible';
			oElement1.style.display='';
		}
	}
}