// formvalidation

var errortext = '';
var errornumber = 0;

function f_init_error() {
	errortext = 'The form could not be submitted because of the following problems:<br>';
	errornumber = 0;
}

function f_validate_form(errorlayername) {
	if (errornumber == 0) {
		$(errorlayername).set('html','');
		return false;
	} else {
		$(errorlayername).set('html','<span class="errormessage">'+errortext+'<\/span>');
		return true;
	}
}

function f_check_text(formname,fieldname,errorquote) {
	eval ('fvar = this.document.'+formname+'.'+fieldname+'.value');
	if (fvar == '') {
		errortext = errortext + errorquote + '<br>';
		errornumber++;
	}
}

function f_check_email(formname,fieldname,errorquote) {
	eval ('fvar = this.document.'+formname+'.'+fieldname+'.value');
	if(!fvar.match(/^\w+([.-]\w+)*@\w+([.-]\w+)+$/)){
		errortext = errortext + errorquote + '<br>';
		errornumber++;
	}
}

function f_is_number(formname,fieldname,errorquote)  {
	eval ('fvar = this.document.'+formname+'.'+fieldname+'.value');
	isnum=true;
	for (i=0;i<fvar.length;i++) {
		j = fvar.charCodeAt(i);
		if (!(j>=48 && j<=57))
			isnum=false;
	}
	if (!isnum) {
		errortext = errortext + errorquote + '<br>';
		errornumber++;
	}
}


badwords = '|11352544|38977727|60554033|36688491|34026383|74915834|30720850|52821701|17445651|30002295|26615819|34161178|31846456|41266535|27998350|49204984|31641034|31254389|11517634|26307896|14053042|18041554|73724428|14411113|84623318|17933546|83210710|83359120|13575774|44913966|35606888|12076507|39523803|31384987|35740960|80268824|102662787|41985753|21208071|26220003|26875753|11672199|38894504|35705247|16218206|35687109|38522165|119094189|40237231|45165694|58762714|43228740|44629060|56199148|49986589|25962118|35157126|21928137|30871459|25318374|63437314|23510462|19694410|39450338|14367307|46014084|77395899|16914730|24113089|11643882|20454109|39856997|31278522|8766480|13488066|45273414|13757762|15089726|24766163|29832178|19823960|20585790|69357347|43099026|41722878|29080179|39330536|47177490|13913821|23509103|41874779|48063552|26449937|19116466|';
// encode a word to compare to list
function wordencode(word) {
	wen = 1000 + word.length;
	for (web=0;web<word.length;web++) {
		wen = wen + (word.charCodeAt(web) * word.charCodeAt(web) * word.charCodeAt(web) * (web+1));
	}
	return wen;	
}

// check if a word is in list of bad words
function iswordbad(suspiciousword) {
	if (badwords.indexOf('|' + wordencode(suspiciousword) + '|') != -1) {
		return true;
	} else {
		return false;
	}
}

function f_check_badwords(formname,fieldname,errorquote) {
	eval ('fvar = this.document.'+formname+'.'+fieldname+'.value');
	fvar = fvar.replace(/\./g,' ');
	fvar = fvar.replace(/\,/g,' ');
	fvar = fvar.replace(/\-/g,' ');
	allwords = fvar.split(' ');
	foundwords = '';
	for (fc=0;fc<allwords.length;fc++) {
		if (iswordbad(allwords[fc])) {
			if (foundwords != '') {
				comma = ', ';
			} else {
				comma = '';
			}
			foundwords = foundwords + comma + allwords[fc];
		}
	}
	
	if (foundwords != '') {
		errortext = errortext + errorquote + foundwords + '<br>';
		errornumber++;
	}
}