var isInternetExplorer = (navigator.appName.indexOf("Microsoft") != -1);

/*
future references:
var keycode = isInternetExplorer ? event.keyCode : event.which;
*/

function countSpaces(obj){
	var iLength = obj.value.length;
	var strSpaces = obj.value.match(new RegExp("( )", "g"));
	var countSpaces = strSpaces ? strSpaces.length : 0;
	return countSpaces;
}

function countLineBreaks(obj){
	var iLength = obj.value.length;
	var strLineBreaks = obj.value.match(new RegExp("(\\n)", "g"));
	var countLineBreaks = strLineBreaks ? strLineBreaks.length : 0;
	return countLineBreaks;
}

function textCounter(field, counter_field, maxlimit) {
	var lineBreaks = countLineBreaks(field);
	var adjust = isInternetExplorer ? 1 : 0;
	if (field.value.length - lineBreaks * adjust > maxlimit){
		field.value = field.value.substring(0, maxlimit + lineBreaks * adjust);
		field.focus();
	} else {
		counter_field.value = maxlimit - field.value.length + lineBreaks * adjust;
	}
}

function backToSection(backToURL, forceBackToURL){
	if(forceBackToURL == null) forceBackToURL = false;
	if(history.length > 1 && !forceBackToURL) history.back(); else window.location.href = backToURL;
}

function hideStatus(){
	window.defaultStatus='';
	window.status='';
	return true;
}

function searchReset() {
	tot = document.search_form.elements.length;
	for(i=0;i<tot;i++) {
		if (document.search_form.elements[i].type == 'text') {
			document.search_form.elements[i].value = "";
		} else if (document.search_form.elements[i].type == 'checkbox' || document.search_form.elements[i].type == 'radio') {
			document.search_form.elements[i].checked = false;
		} else if (document.search_form.elements[i].type == 'select-one') {
			document.search_form.elements[i].selectedIndex = 0;
		}
	}
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}