var errMsg = '';
var aNumDays = new Array (31,0,31,30,31,30,31,31,30,31,30,31);
var checkbox_result = '';

function clear_text(obj, default_text){
	if (trim(obj.value)==default_text){
		obj.value = '';
	}
}
function set_text(obj, default_text){
	if (trim(obj.value)==''){
		obj.value = default_text;
	}
}
function checkNumeric(obj, fieldName)
{
	charpos = obj.value.search("[^0-9]"); 
	if(charpos >= 0) 
	{ 
		//addErrorMsg(obj, fieldName);
		return 0; 
	}
	return 1;
}

function checkFloat(obj, strError)
{
	var charpos = obj.value.search("[^0-9.]"); 
    if(obj.value.length > 0 &&  charpos >= 0) 
    { 
		alert(strError); 
        return false; 
    }
	return true;
}
function checkRequired(obj, fieldType, fieldName, otherParm)
{
	switch(fieldType) 
	{
		case 'text':
		{
			if(eval(obj.value.length) == 0) 
			{
				addErrorMsg(obj, fieldName);
				return false; 
			}
			return true;
		}
		case 'text_default':
		{
			if(eval(obj.value.length) == 0) 
			{
				addErrorMsg(obj, fieldName);
				return false; 
			}
			if(obj.value==otherParm)
			{
				addErrorMsg(obj, fieldName);
				return false; 
			}
			return true;
		}
		case 'radio':
		{
			for (i=0, n=obj.length; i<n; i++) 
			{
				if (obj[i].checked) 
				{
					return true;
				}
			}
			addErrorMsg(obj, fieldName);
			return false; 			
		}
		case 'checkbox':
		{
			checkbox_result = '';
			for (i=0, n=obj.length; i<n; i++)
			{
				if (obj[i].checked) 
				{
					if (checkbox_result != ''){
						checkbox_result += '<>';
					}
					checkbox_result += obj[i].value;
					
				}
			}
			if (checkbox_result == ''){
				addErrorMsg(obj, fieldName);
				return false; 			
			}else
				return true;
		}
		case 'select':
		{
			if (!otherParm) 
			{
				emptyIndex = 0;
			}
			else
			{
				emptyIndex = otherParm;
			}
			if (obj.selectedIndex == emptyIndex){
				addErrorMsg(obj, fieldName);
				return false;
			}
			return true;
		}
		case 'email':
		{
			if(eval(obj.value.length) == 0) 
			{
				addErrorMsg(obj, fieldName);
				return false; 
			}else{
				if (!validateEmailv2(trim(obj.value)))
				{
					addErrorMsg(obj, otherParm);
					return false;
				}
		
			}
			return true;
		}
	}	
}

function addErrorMsg(obj, fieldName)
{
	if (errMsg.length== 0)
	{
		errMsg = 'Please enter the following:';
	}
	if(!fieldName || fieldName.length ==0) 
	{ 
		fieldName = obj.name; 
	}								
	errMsg += '\n - '+fieldName;	
}

function showError(errMsg)
{
	if (errMsg.length > 0)
	{
		alert(errMsg);
		return true;
	}
	return false;
}
function validateEmailv2(email)
{
    if(email.length <= 0)
	{
	  return true;
	}
	email = trim(email);
    var splitted = email.match("^(.+)@(.+)$");
    if(splitted == null) return false;
    if(splitted[1] != null )
    {
		var regexp_user=/^\"?[\w-_\.]*\"?$/;
		if(splitted[1].match(regexp_user) == null) return false;
    }
    if(splitted[2] != null)
    {
		var regexp_domain=/^[\w-\.]*\.[A-Za-z]{2,4}$/;
		if(splitted[2].match(regexp_domain) == null) 
		{
			var regexp_ip =/^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/;
			if(splitted[2].match(regexp_ip) == null) return false;
		}// if
		return true;
    }
return false;
}


function isDate(dtStr){
	var dtCh= "/";
	var minYear=1900;
	var maxYear=2100;

	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		//alert("The date format should be : mm/dd/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		//alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		//alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		//alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		//alert("Please enter a valid date")
		return false
	}
return true
}


function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function trim(stringToTrim){ return stringToTrim.replace(/^\s+|\s+$/g,"");}
function gosubmit(frm){
	if (form_submit(frm)) 
		frm.submit();
}

function getSTFPagename(){
	sendpagename = getPagename().substring(8);
	
	switch (sendpagename){
		case "contactus": case "appointment": case "faq": case "prices": case "styles":  case "aboutus": case "index":
		case "demo":
		break;
		default:
			if (document.referrer != ''){					
				sendpagename = document.referrer;
			}else
				sendpagename = "index";
		break;
	}
	return sendpagename;
}