function isUrl(s) {
	stripPage(s)
	var regexp = /\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
	return regexp.test(s);
}

function stripPage(s)
{
	var strUrl 		= null;
	var endProtocol = s.indexOf("//")
	var startPos 	= endProtocol+2
	var firstSledge = s.indexOf("/",startPos)
	if(firstSledge != -1){strUrl = s.substr(0,firstSledge);document.getElementById("url").value = strUrl}
}

function checkUrl()
{
	//inputUrl = document.getElementById("url").value
	//if(isUrl(inputUrl)){stripPage(inputUrl);return true;}
	//else{alert("Het internetadres is onjuist.");return false;}
	return true;
}

function init()
{
	frm = document.forms[0];
}