function clearField( field_name )
{
	document.getElementById( field_name ).value = '';
	document.getElementById( field_name ).style.backgroundColor = '';
}

function highlightFields( field_str )
{
	var fields = field_str.split(',');
	
	for( var i=0; i<fields.length; i++ )
	{
		highlightField( fields[i], '#F6F5CF' ); 
	}
	
}


function highlightField( field_name, field_color )
{
	document.getElementById( field_name ).style.backgroundColor = field_color;
}


function formatCurrency(num) 
{
	num = num.toString().replace(/\$|\,/g,'');
	if(isNaN(num))
	num = "0";
	sign = (num == (num = Math.abs(num)));
	num = Math.floor(num*100+0.50000000001);
	cents = num%100;
	num = Math.floor(num/100).toString();
	if(cents<10)
	cents = "0" + cents;
	for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
	num = num.substring(0,num.length-(4*i+3))+','+
	num.substring(num.length-(4*i+3));
	return (((sign)?'':'-') +  num + '.' + cents);
}	//end function

function validate_required_fields(frmName, strTextBoxes)
{
	var oForm = document.getElementById(frmName);
	
	//turn the comma separated list into an array
	var arrBoxes = strTextBoxes.split(",");
	
	error = 0;
	
	//loop thru each box and determine if the text value is empty
	for( var intCount = 0; intCount < arrBoxes.length; intCount++ )
	{
		arrBoxes[intCount] = arrBoxes[intCount].trim_spaces();
		
		//alert( "inCount: " + intCount + " - text box: -->" + arrBoxes[intCount] + "<--" );
		
		var strText = document.getElementById(arrBoxes[intCount]).value;
		
		if( strText.length == 0 )
		{
			error++;
			
		}	//end if
		
	}	//end for loop
	
	//if any errors, then user did not enter all the required fields
	if( error > 0 )
	{
		alert( "Please enter all the required fields." );
		
		valid = false;
		
	}	//end if
	
	else
	{
		valid = true;
		
	}	//end else
	
	return valid;
	
}	//end function

function pop_templates()
{
	window.open('pop_templates.php','admin_pop','width=600,height=400,scrollbars=yes,resizable=yes');	
}

//removes all spaces in a string
function removespaces() 
{
	return this.replace(/.*\S/,'');
	
}	//end function

//trims leading and trailing spaces
function trim_spaces() 
{
	return this.replace(/^\s+/,'').replace(/\s+$/,'');
	
}	//end function

function clear_image( field_id )
{
	document.getElementById( 'pg-' + field_id ).src = 'images/spacer.gif';
	document.getElementById( field_id ).value = '';
	document.getElementById( field_id + '_filename' ).value = '';
}

function clear_link( field_id )
{
	document.getElementById( field_id ).value = '';
	document.getElementById( field_id + '_text' ).innerHTML = '';
	document.getElementById( field_id + '_text' ).style.backgroundColor = '';
}


function isNumeric(sText) {
	var ValidChars = "0123456789.";
	var IsNumber=true;
	var Char;
	for (i = 0; i < sText.length && IsNumber == true; i++) {
		Char = sText.charAt(i); 
		if (ValidChars.indexOf(Char) == -1) {
			IsNumber = false;
		}
	}
	return IsNumber;
}

function toggleImageType() {
	field = document.getElementById('filetype');
	imageTypeFiled = document.getElementById('image-type');
	if( field && imageTypeFiled) {
		if( field.value == 'img' ) {
			imageTypeFiled.disabled=false;
			document.getElementById('image-type-span').style.display = "inline";
			if(document.getElementById('grayscale_value').value == "1") {
				document.getElementById("grayscale").disabled=true;
			}
			else
			{
				document.getElementById("grayscale").disabled=false;
			}
		}
		else {
			imageTypeFiled.disabled=true;
			imageTypeFiled.value="";
			document.getElementById('image-type-span').style.display = "none";
			document.getElementById("grayscale").disabled=true;
		}
	}
}
function toggleRecurringOptions()
{
	var checkboxField = document.getElementById("recurring");
	
	if (checkboxField)
	{
		if (checkboxField.checked)
		{
			document.getElementById("recurring-options").style.display = "block";
		}
		else
		{
			document.getElementById("recurring-options").style.display = "none";
		}	
	}
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function emergencyOnload()
{
	Image1= new Image(17,17)
	Image1.src = "images/icons/icon_minus.gif"
	Image2 = new Image(17,17)
	Image2.src = "images/icons/icon_plus.gif"
	/*	
	function SwapOut() {
		document.buttontoggle.src = Image2.src; return true;
	}
		
	function SwapBack() {
		document.buttontoggle.src = Image1.src; return true;
	}
	*/
	// Get Elements
	var box = $('emergency_container');
	var link = $('emergency_close');
	var button = $('emergency_toggle_button');
	
	var openBox = function(isLoad) {
		document.buttontoggle.src = Image1.src;
		Effect.SlideDown(box, {duration: !isLoad ? 1 : 0});
		if(!isLoad) createCookie('emergency', 'open');
	};
	
	var closeBox = function(isLoad) {
		document.buttontoggle.src = Image2.src;
		Effect.SlideUp(box, {duration: !isLoad ? 1 : 0});
		if(!isLoad) createCookie('emergency', 'closed');
	};
	
	
	
	
	
	// Init State
	if(readCookie('emergency') !== 'closed') {
		openBox(true);
	}
	else {
		closeBox(true);
	}
	
	// Setup Event
	link.observe('click', function() {
		// Toggle State
		if(readCookie('emergency') !== 'closed') {
			closeBox();
		}
		else {
			openBox();
		}
	});
	
	Event.observe(window, 'load', function() {
		$('emergency_container').removeClassName('hidden');
	});
}

//assigns a new function to string types
String.prototype.removespaces = removespaces;
String.prototype.trim_spaces = trim_spaces;