// 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 validate_news()
{
	var news_name = $('#news_name_input').val();
	var news_email = $('#news_email_input').val();
	var res = true; 
	var msg = "<p><span class='ui-icon ui-icon-alert' style='float: left; margin-right: .3em;'></span>Please check the following errors:-<ul>";
		if(news_name.length == 0)	
		{
			res = false;
			msg += "<li>Please provide your Name.</li>";
		}
		if(!news_email.match(/^\w+([\.\-]\w+)*@\w+([\.\-]\w+)*\.[a-z]{2,4}$/i))
		{
			res = false;	
			msg += "<li>Please provide a valid email address.</li>";			
		}					
	msg += "</ul></p>";				
	if(res == false)				
	{
		$('#dialog').html(msg);				
		$('#dialog').dialog('open');				
		return false;				
	}
	else return true;		
}
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;
}
function searchFocus(txt)
{
    if(txt.value == 'Search the site...')
    {
        txt.value = '';
    }
}

function searchBlur(txt)
{
    if(txt.value == '')
    {
        txt.value = 'Search the site...';
    }
}

$(document).ready(function() 
{
			// Dialog			
			$('#dialog').dialog({
				autoOpen: false,
				title:'TWD Accountants',
				modal:true,
				width: 450,
				buttons: {
					"Ok": function() { 
						$(this).dialog("close"); 
						$('#dialog').html(""); 
					}
				}
			});
		 
});