// JavaScript Document

function num_only(id)

{

	var field = document.getElementById(id);

	if(field.value.match(/[^0-9\.\-]/))field.value=field.value.replace(/[^0-9\.\-]/g,'');

}

function to_num(data)

{

	var i = 0;	

	if(data.length > 0)

	{

	 var i = parseFloat(data);

	}

	

	return i;

}



function to_amount(amount)

{

	if (isNaN(amount))

	{

		amount = 0;

	}

	var i = parseFloat(amount);

	if(isNaN(i)) { i = 0.00; }

	var minus = '';

	if(i < 0) { minus = '-'; }

	i = Math.abs(i);

	i = parseInt((i + .005) * 100);

	i = i / 100;

	s = new String(i);

	if(s.indexOf('.') < 0) { s += '.00'; }

	if(s.indexOf('.') == (s.length - 2)) { s += '0'; }

	s = minus + s;

	return s;

}

function clear_values(div_id)

{//function to clear all the inputs within a div. 

	   ///      get the container DIV

            var div = document.getElementById(div_id);

            ///      get all INPUT elements within the DIV

            var inputs = div.getElementsByTagName('input');

			//alert(inputs.length);

            for(var i=0; i<inputs.length; i++)

            {

				if(inputs[i].type == 'text'|| inputs[i].type=='password') {

                        inputs[i].value = "";

                  }else if(inputs[i].type == 'radio'){

                        inputs[i].checked = false;

                  }else if(inputs[i].type == 'checkbox'){

                        inputs[i].checked = false;

                  }else if(inputs[i].type == 'select-one'){

                        inputs[i].selectedIndex = -1;

                  }else if(inputs[i].type == 'select-multiple'){

                        inputs[i].selectedIndex = -1;

                  };				

			}

}



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



}

// 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 check_date(dtStr){

	var data = new Array();

	result = true;


	var message = "";

	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){

		message += "<li>The date format should be : dd/mm/yyyy</li>";

		result = false;

	}

	if (strMonth.length<1 || month<1 || month>12){

		message +="<li>Please enter a valid month at start/end date fields.</li>";

		result = false;

	}

	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){

		message +="<li>Please enter a valid day at start/end date fields.</li>";

		result= false;

	}

	if (strYear.length != 4 || year==0){

		message +="<li>Please enter a valid 4 digit year between "+minYear+" and "+maxYear+"</li>";

		result = false;

	}

	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){

		message += "<li>Please enter a valid date at start/end date fields.</li>";

		result = false;

	}

	data = [result,message];

return data;

}



$(document).ready(function() 

{

			// Dialog			

			$('#dialog').dialog({

				autoOpen: false,

				title:'TWD Accountants',

				modal:true,

				width: 450,

				buttons: {

					"Ok": function() { 

						$(this).dialog("close"); 

						$('#dialog').html(""); 

					}

				}

			});

		 

});