function isValidURL(urlval) {
        splitval1 = urlval.split("?");
        domain  = splitval1[0];
        qstring = splitval1[1];
        splitval2 = domain.split("#");
        url     = splitval2[0];
        var v   = new RegExp();
	v.compile("^[A-Za-z]+://[A-Za-z0-9-_]+\\.[A-Za-z0-9-,~\(\)!_%&[\\]\?\$\*\:\+\/.=]+$");
        if(!v.test(url)) { return false; }
        else { return true; }
}

function JumpURL(selection) {
        var tempIndex, selectedURL;
        tempIndex = selection.selectedIndex;
        selectedURL = selection.options[tempIndex].value;
        location.href = selectedURL;
}

function toggleDisplay (elid) {
	var curDisp	= document.getElementById(elid).style.display;
	var newDisp	= "none";
	if(curDisp=="none" || !curDisp)	{ newDisp = "block"; }
	document.getElementById(elid).style.display = newDisp;
}

function trim(str) { 
	return str.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
}

function isEmail (emailStr) {	// updated 4/22/2008
	var checkTLD=1;	// 1 to check for two-letter country or well-known TLD - 0 to ignore
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	var emailPat=/^(.+)@(.+)$/;
	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; }	// Email address seems incorrect (check @ and .'s)
	var user=matchArray[1];
	var domain=matchArray[2];

	for (i=0; i<user.length; i++) {
		if (user.charCodeAt(i)>127) { return false; }	// The username contains invalid characters
	}
	for (i=0; i<domain.length; i++) { 
		if (domain.charCodeAt(i)>127) { return false; }	// The domain name contains invalid characters
	}

	if (user.match(userPat)==null) { return false; }	// The username is invalid

	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {	// this is an IP address
		for (var i=1;i<=4;i++) {
			if (IPArray[i]>255) { return false; }	// Destination IP address is invalid
		}
		return true;
	}

	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	for (i=0;i<len;i++) {
		if (domArr[i].search(atomPat)==-1) { return false; }	// The domain name is invalid
	}

	if (checkTLD && domArr[domArr.length-1].length!=2 && domArr[domArr.length-1].search(knownDomsPat)==-1) {
		return false;	// The address must end in a well-known domain or two letter country code
	}

	if (len<2) { return false; }	// This address is missing a hostname
	return true;
}