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_video( field_id )
{
	document.getElementById( field_id ).value = '';
	document.getElementById( field_id + '_text' ).innerHTML = '';
}

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;
}

// Hide or show elements on a page
// nodeIds - ID of one or more (separated by "|") elements on a page
// visTo - takes a value of 0 or 1 to set visibility as either none or block (by default)
// visType (optional) - allows override of default block visibility type for other options (e.g. inline, table-row-group, etc.)
function hide_show(nodeIds, visTo, visType)
{
	var nodeIdArr = nodeIds.split("|");
	
	for(i=0; i<nodeIdArr.length; i++) {
		var nodeId = nodeIdArr[i];
		var thisNode = document.getElementById(nodeId);
		
		// check for node's current visibility
		if(visTo == 1) {
			if(visType) {
				if( (visType == "table-row-group" || visType == "table-row") && document.all ) visType = "block";
				thisNode.style.display = visType;
			} else {
				thisNode.style.display = "block";
			}
		} else if(visTo == 0) {
			thisNode.style.display = "none";
		} else { // find node current vis and assume the opposite
			var currVis = thisNode.style.display;
			
			if(currVis) {
				if(currVis == "none")
					thisNode.style.display = ( visType ? visType : "block" );
				else
					thisNode.style.display = "none";
			} else if(thisNode.className == "no_show") {
				thisNode.style.display = ( visType ? visType : "block" );
			} else { // assume element starts as visible
				thisNode.style.display = "none";
			}
		}
	}
}

function swap_expand_icons(clicked_header) {
	var curr_class = clicked_header.className;

	if( curr_class == "expandable")
		var new_class = "contractable";
	else
		var new_class = "expandable";

	clicked_header.className = new_class;
}

function go_to_site()
{
	if (document.getElementById('topmenu').value!="")
	{
		link = document.getElementById('topmenu').value;
		
		if (link.substring(0,3)!='nw_')
		{
			window.location=link;
		}
		else
		{
			link = link.substring(3);
			window.open(link);
		}
	}
}

function toggleEmail(action) {
	un_field = document.getElementById('email');
	if( un_field ) {
		if( action == 'on' ) {
			if( un_field.value=='email address' ) {
				un_field.value='';
			}
		}
		else if( action == 'off' ) {
			if( un_field.value=='' ) {
				un_field.value='email address';
			}
		}
	}
}

function checkEmail()
	{
		var submit = true;
		var objForm = document.getElementById('email');
		var em = "";
		
		var temp = objForm.value.split('@');
		
		if (temp[1] == null) {
			submit = false;
			em = em + 'Your email address isn\'t formatted correctly. Please try again.\n';
		} //end if
	  	
	  	else {
	   		var itemp = temp[1].split('.');
	   		
	   		if (itemp[1] == null) {
	   			submit = false;
	   			em = em + 'Your email address isn\'t formatted correctly. Please try again.\n';
	    	}	//end if
	   }	//end else
	   
	   	if( submit == false ) {
			alert( em );
	   	}	//end if
	   
	   return submit;
		
	}

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";
		}
		else {
			imageTypeFiled.disabled=true;
			document.getElementById('image-type-span').style.display = "none";
		}
	}
}

function togglePageContentBox(mode)
{
	if (mode)
	{
		if (document.getElementById('page-content'))
		{
			document.getElementById('page-content').style.display="block";
			document.getElementById('page-content-warning').style.display="none";
		}
		
	}
	else
	{
		if (document.getElementById('page-content'))
		{
			document.getElementById('page-content').style.display="none";
			document.getElementById('page-content-warning').style.display="block";
		}
	}
	
}

function togglePageContentBoxPopup(mode)
{
	if (mode)
	{
		if (window.opener.document.getElementById('page-content'))
		{
			window.opener.document.getElementById('page-content').style.display="block";
			window.opener.document.getElementById('page-content-warning').style.display="none";
		}
		
	}
	else
	{
		if (window.opener.document.getElementById('page-content')) 
		{
			window.opener.document.getElementById('page-content').style.display="none";
			window.opener.document.getElementById('page-content-warning').style.display="block";
		}
	}
}

function toggleContentBoxes(elementId)
{
	$('#'+elementId).toggle("slow");
}

function changeFontSize(size)
{
	var p = document.getElementsByTagName('div');
	var h1 = document.getElementsByTagName('h1');
	var h2 = document.getElementsByTagName('h2');
	var h3 = document.getElementsByTagName('h3');
	var h4 = document.getElementsByTagName('h4');
	var h5 = document.getElementsByTagName('h5');
	var h6 = document.getElementsByTagName('h6');
	
	if(size) {
		createCookie("claruseyecentretextsize", size, 365);
		for(n=0; n<p.length; n++) {
			
			if (p[n].getAttribute("class")=="page-content")
			{
				p[n].style.fontSize = size + 'em';
			}
		}
		
		for(n=0; n<h1.length; n++) {
			if (size>1)
				h1[n].style.fontSize = size + 'em';
			else
				h1[n].style.fontSize = '';
		}
		
		for(n=0; n<h2.length; n++) {
			if (size>1)
				h2[n].style.fontSize = size + 'em';
			else
				h2[n].style.fontSize = '';
		}
		
		for(n=0; n<h3.length; n++) {
			if (size>1)
				h3[n].style.fontSize = size + 'em';
			else
				h3[n].style.fontSize = '';
			
		}
		
		for(n=0; n<h4.length; n++) {
			if (size>1)
				h4[n].style.fontSize = size + 'em';
			else
				h4[n].style.fontSize = '';
		}
		
		for(n=0; n<h5.length; n++) {
			if (size>1)
				h5[n].style.fontSize = size + 'em';
			else
				h5[n].style.fontSize = '';
		}
		
		for(n=0; n<h6.length; n++) {
			if (size>1)
				h6[n].style.fontSize = size + 'em';
			else
				h6[n].style.fontSize = '';
		}
				
	} else {
		
	}
}

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;
}

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