//Declaring valid date character, minimum year and maximum year
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 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 validateDate(date){
	if (isDate(date)==false){
		return false;
	}
    return true;
 }




function checkForm(idioma){
	
	//1 = catalan
	//2= ingles
	//3 = castellano
	var conte=true;
	if(!validateDate(document.getElementsByName("data_naix")[0].value)){
		if(idioma==1){
			document.getElementById("errorDataNaix").innerHTML="Debe ingresar su fecha de nacimiento en el formato dd/mm/aaaa";
		}
		if(idioma==2){
			document.getElementById("errorDataNaix").innerHTML="Date of birth must be entered with the format: dd/mm/yyyy";
		}
		if(idioma==3){
			document.getElementById("errorDataNaix").innerHTML="Debe ingresar su fecha de nacimiento en el formato dd/mm/aaaa";
		}
		conte=false;
	}else{
		document.getElementById("errorDataNaix").innerHTML="";
	}
	if(document.getElementsByName("ciutat")[0].value.length<2){
		if(idioma==1){
			document.getElementById("errorCiutat").innerHTML="Debe ingresar una Ciutat";
		}
		if(idioma==2){
			document.getElementById("errorCiutat").innerHTML="You must enter a City";
		}
		if(idioma==3){
			document.getElementById("errorCiutat").innerHTML="Debe ingresar una Ciudad";
		}
		conte=false;
	}else{
		document.getElementById("errorCiutat").innerHTML="";
	}
	if(document.getElementsByName("nom")[0].value.length<1){
		if(idioma==1){
			document.getElementById("errorNom").innerHTML="Debe ingresar su nom.";			
		}
		if(idioma==2){
			document.getElementById("errorNom").innerHTML="You must enter a name.";			
		}
		if(idioma==3){
			document.getElementById("errorNom").innerHTML="Debe ingresar su nombre.";			
		}
		conte=false;
	}else{
		document.getElementById("errorNom").innerHTML="";
	}
	if(document.getElementsByName("cognom1")[0].value.length<1){
		if(idioma==1){
			document.getElementById("errorCognom").innerHTML="Debe ingresar su cognom.";
		}
		if(idioma==2){
			document.getElementById("errorCognom").innerHTML="You must enter a last name.";
		}
		if(idioma==3){
			document.getElementById("errorCognom").innerHTML="Debe ingresar su apellido.";
		}
		conte=false;
	}else{

		document.getElementById("errorCognom").innerHTML="";
	}
	if(document.getElementsByName("crear_empresa")[0].checked!=true&&document.getElementsByName("estudio_master")[0].checked!=true&&document.getElementsByName("investigar")[0].checked!=true&&document.getElementsByName("carrera_prof")[0].checked!=true){
		if(idioma==1){
			document.getElementById("errorInteressos").innerHTML="Debe seleccionar al menos un interesso.";
		}
		if(idioma==2){
			document.getElementById("errorInteressos").innerHTML="You must select at least one interest.";
		}
		if(idioma==3){
			document.getElementById("errorInteressos").innerHTML="Debe seleccionar al menos un interes.";
		}
		conte=false;
	}else{
		
		document.getElementById("errorInteressos").innerHTML="";
	}
	
	if((idioma==1 ||idioma==3) && document.getElementsByName("cognom2")[0].value.length<1){
		if(idioma==1){
			document.getElementById("errorCognom2").innerHTML="Debe ingresar su segun cognom.";
		}
		if(idioma==3){
			document.getElementById("errorCognom2").innerHTML="Debe ingresar su segundo apellido.";
		}
		conte=false;
	}else if(idioma==1 ||idioma==3){

		document.getElementById("errorCognom2").innerHTML="";
	}
	
	var str = document.getElementsByName("email")[0].value;
	var re = /^[\w-]+(\.[\w-]+)*@([\w-]+\.)+[a-zA-Z]{2,7}$/;
	if (!str.match(re)) {
		if(idioma==1){
			document.getElementById("errorEmail").innerHTML="Debe ingresar un e-mail valido";        
		}
		if(idioma==2){
			document.getElementById("errorEmail").innerHTML="You must enter a valid e-mail address";        
		}
		if(idioma==3){
			document.getElementById("errorEmail").innerHTML="Debe ingresar un e-mail valido";        
		}
		conte= false;
    }else{
    	document.getElementById("errorEmail").innerHTML="";        

    }
	
	if(conte){
		document.getElementById('formulario').submit();
	}else{
		window.location.href="#form";
	}
}