var page=1;
function next(){
	if(!check(page))
		return
	hide();
	page++;
	show();
}

function back(){
	if(!check(page))
		return
	document.getElementById("result-cont").innerHTML = '';
	hide();
	page--;
	show();
}

function hide(){
	document.getElementById('page'+page).style.display='none';	
}

function show(){
	document.getElementById('page'+page).style.display='inline';
	document.getElementById('page-n').innerHTML = page;
}

function submitForm(){
	if(!check(page))
		return
	try{
		FlashStop();
		document.getElementById('submit-cont').style.display='none';
		//alert('display');
		FlashStop();
	}
	catch(e){
		alert(e);
	}
	var queryString = $('#form1').formSerialize();
	action = document.getElementById("form1").action;
	$.post(action, queryString, resultForm);
	//$.post('http://ei_test.local/test.php', queryString, resultForm);
}

function  resultForm(data){
	if(data.charAt(0)!='<'){
		document.getElementById('page-of').innerHTML = '';
		document.getElementById('form1').innerHTML = '';
	}
	document.getElementById("result-cont").innerHTML = data;
}

function mailCheck(fieldObject){
				if(fieldObject.value=='')
					return true;
				var str = fieldObject.value;
				var errMsg='E-mail address not valid.';
				var at="@";
				var dot=".";
				var lat=str.indexOf(at);
				var lstr=str.length;
				var ldot=str.indexOf(dot);
				rs = true;
				if (str.indexOf(at)==-1){
		   			 rs = false;
				}

				if(str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
			   		rs = false;
				}

				if(str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    		rs = false;
				}

		 		if(str.indexOf(at,(lat+1))!=-1){
			    	rs = false;
		 		}

		 		if(str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    		rs = false;
		 		}

		 		if(str.indexOf(dot,(lat+2))==-1){
		    		rs = false;
		 		}
		
		 		if(str.indexOf(" ")!=-1){
		    		rs = false;
		 		}
		 		
		 		if(!rs){
		 			alert(errMsg);
		 			fieldObject.focus();
		 			fieldObject.select();
		 		}
		 			
				return rs;					
}

function dateCheck(fieldObject){
	if(fieldObject.value=='')
		return true;
		
	if(isDate(fieldObject.value))
		return true;
	else{
		fieldObject.focus();
		 fieldObject.select();
		return false;
	}
}

function yearCheck(fieldObject){
	if(fieldObject.value=='')
		return true;
		
	v = fieldObject.value;
	if(isInteger(v) && v.length==4)
		return true;
	else {
		alert('Field should contain integer value (e.g. 1985).');
		fieldObject.focus();
		fieldObject.select();
		return false;
	}
}

function checkRequired(){
	if(page!=2)
		return true;
		
	name = document.getElementById('FirstName').value;
	lastName = document.getElementById('LastName').value;
	eMail = document.getElementById('Email').value;
	if((name=='') || (lastName=='') || (eMail=='')){
		alert('First Name, Last Name and Email are required.\nPlease fill out these fields and try again.');
		return false;
	}
	return true;
}

//---------------------------------------
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

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 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 isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=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 setTitle(title){
	//alert(title);	
	titleEl = document.getElementsByTagName('TITLE');
	if(titleEl.length > 0){
		t = titleEl[0];
		t.innerHTML = title;
	}
	
}