var activeDiv = null;
var activeDiv2 = null;

function showDiv(div) {
	if(activeDiv != null) {
		hideDiv(activeDiv);
	}
	activeDiv = div;
	obj = document.getElementById(div);
	obj.style.visibility = "visible";			
}

function hideDiv(div) {
	obj = document.getElementById(div);
	obj.style.visibility = "hidden";			
}

function showDiv2(div) {
	if(activeDiv2 != null) {
		hideDiv2(activeDiv2);
	}
	activeDiv2 = div;
	obj = document.getElementById(div);
	obj.style.visibility = "visible";
}

function hideDiv2(div) {
	obj = document.getElementById(div);
	obj.style.visibility = "hidden";			
}

function showInfo(div) {
	obj = document.getElementById(div);
	obj.style.visibility = "visible";			
}

function hideInfo(div) {
	obj = document.getElementById(div);
	obj.style.visibility = "hidden";			
}

var VF = null
function openVF(winURL)
{
	var POP_WIDTH = 401
	var POP_HEIGHT = 401
	var leftpos = (screen.width - POP_WIDTH) / 2; 
	var toppos = (screen.height - POP_HEIGHT) / 2;
	var aa = "toolbar=no,directories=no, menubar=no, scrollbars=yes, resizable=yes";
	aa = aa +",width="  + POP_WIDTH;
	aa = aa +",height=" + POP_HEIGHT;
	aa = aa + ",left=" +leftpos;
	aa = aa + ",top=" +toppos;
		
	VF=open(winURL,"VF", aa);
}

function removeText(field) {
	field.value = '';
	field.disabled = true;
}

function enableField(field) {
	field.disabled = false;
}

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) {
		alert("E-post adressen ser ikke riktig ut. Kontroller @ og .'er")
		return false
	}
	var user=matchArray[1]
	var domain=matchArray[2]
	
	// See if "user" is valid 
	if (user.match(userPat)==null) {
	    // user is not valid
	    alert("Navnet i e-post adressen ser ugyldig ut.")
	    return false
	}
	
	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) {
	    // this is an IP address
		  for (var i=1;i<=4;i++) {
		    if (IPArray[i]>255) {
		        alert("Ugyldig IP addresse!")
			return false
		    }
	    }
	    return true
	}
	
	// Domain is symbolic name
	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		alert("Domenenavnet i e-post adressen er ikke gyldig.")
	    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) {
	   // the address must end in a two letter or three letter word.
	   alert("E-post adressen skal avsluttes med 2-4 bokstaver")
	   return false
	}
	
	if (len<2) {
	   var errStr="E-post adressen mangler domenenavn!"
	   alert(errStr)
	   return false
	}
	
	return true;
}

function tlfCheck(Phone) {
	if (Phone.length < 7){
		alert("Vennligst oppgi et gyldig telefonnummer")
		return false
	}
	return true
}