Image onClick

**baldwingrand** · 03-30-2009 08:57 PM

I would like to use an onClick on a couple of <img> tags to show/hide additional fields. For example- I have images for "+" and "-" signs. When I click on the "+" image, I want additional fields to display, and when I click the "-" image, I want fields to disappear. If this is possible, what would the code look like? Thanks.

**JMRKER** · 03-30-2009 09:03 PM

Originally Posted by baldwingrand

I would like to use an onClick on a couple of <img> tags to show/hide additional fields. For example- I have images for "+" and "-" signs. When I click on the "+" image, I want additional fields to display, and when I click the "-" image, I want fields to disappear. If this is possible, what would the code look like? Thanks.

Yes, it's possible.
What code have you attempted so far?

**baldwingrand** · 03-31-2009 10:05 AM

Here's what I have so far... I initially used radio buttons, so I've left them in for the example. I would probably also need to be able to disable the "-" image when only one keyword search box is available. Thanks!

HTML Code:

<html>
<head>
<script type="text/javascript">

function toggleSearch() 
{
	toggleDisabled(document.getElementById("divSelect"));
	toggleDisabled(document.getElementById("divSelect2"));
	toggleDisabled(document.getElementById("cboSelect3"));
}

function displaySelect()
{
	divSelect2.style.display = "none";
	divMatch2.style.display = "none";
	divMatch1.style.display = "";
	
	valid = false;
	if(document.frmIssueAdvancedSearch.rbPlusMinus[0].checked)
		{
			valid = true;
			divSelect2.style.display = "";
			divMatch2.style.display = "";
			divMatch1.style.display = "none";
		}
	if(document.frmIssueAdvancedSearch.rbPlusMinus[1].checked)
		{
			valid = true;
			divSelect2.style.display = "";
			divMatch2.style.display = "";
			divMatch1.style.display = "none";
		}
}

function toggleDisabled(el) 
{
	try 
	{
		el.disabled = !el.disabled;
	}

	catch(E){}
	if (el.childNodes && el.childNodes.length > 0) 	
	{
		for (var i=0; i<el.childNodes.length; i++) 
		{
		toggleDisabled(el.childNodes[i]);
		}
	}
}

</script>
</head>

<body>

<form name="frmIssueAdvancedSearch" id="frmIssueAdvancedSearch" method="post">
<table width="99%" border="1" class="WebApps">
	<tr><td colspan="2"><h3>Keyword Search</h3></td></tr>
	<tr>
		<td colspan="2">
		<div id="divMatch1">
			<p><input name="checkbox" type="checkbox" id="checkbox" value="toggleSearch()" onClick="toggleSearch()" checked>Match the following criteria:</p>
		</div>
		
		<div id="divMatch2" style="display:none;">
			<p>
			<input name="checkbox2" type="checkbox" id="checkbox2" value="toggleSearch()" onClick="toggleSearch()" checked>Match 
			<select name="cboCriteria" id="cboCriteria">
				<option selected>all</option>
				<option>any</option>
			</select>of the following criteria:
			</p>
		</div>
		
		<div id="divSelect" style="padding:3 pt;">
			<p>
			<select name="cboSelect" id="cboSelect">
				<option>Title</option>
				<option>Description</option>
				<option>Issue Type</option>
				<option>Function</option>
			</select>&nbsp;&nbsp;contains &nbsp;&nbsp;
			
			<input name="txtKeyword" type="text" id="txtKeyword" size="30" maxlength="30">
			<img src="../images/plus.gif" width="15" height="15" alt=""> 
			<img src="../images/minus.gif" width="15" height="15" alt="">
			<input type="radio" name="rbPlusMinus" id="rbPlusMinus" value="0" onClick="displaySelect()">+
			<input type="radio" name="rbPlusMinus" id="rbPlusMinus" value="1" onClick="displaySelect()">-
			</p>
		</div>
		
		<div id="divSelect2" style="padding:3 pt; display:none;">
			<p>
			<select name="cboSelect2" id="cboSelect2">
				<option>Title</option>
				<option>Description</option>
				<option>Issue Type</option>
				<option>Function</option>
			</select>&nbsp;&nbsp;contains &nbsp;&nbsp;
			
			<input name="textfield" type="text" id="textfield" size="30" maxlength="30">
			</p>
		</div>
		
		<div id="divOpenDate" style="padding:3 pt;">
			<h4>&nbsp;</h4>
			<h4>When opened:</h4>
			<p>
			<select name="cboOpenDate" id="cboOpenDate">
				<option selected>15 days ago</option>
				<option>one month ago</option>
				<option>three months ago</option>
			</select>
			</p>
		</div>
			<p>&nbsp;</p>
			<p>
			<input name="button" type="submit" class="button" id="button2" value="Search">
			<input name="Reset" type="reset" class="button" id="button" onClick="parent.location='ip_issues_search.asp'" value="Reset Search">
			</p>
		</td>
	</tr>
</table>
<p>&nbsp;</p>
</form>

</body>
</html>

**JMRKER** · 03-31-2009 11:43 AM

Substitute your images for the <button> tags
and place your code between the <div> tags that will do what you want when the "+" is pressed.

Code:

<html>
<head>
<title>Show Hide  DIV</title>
<script type="text/javascript">
// From: http://www.webdeveloper.com/forum/showthread.php?p=993689#post993689

function Show(IDS,flag) {
  document.getElementById(IDS).style.display = flag;
}
</script>
</head>
<body>
<button onclick="Show('divTag','block')">+</button>
<button onclick="Show('divTag','none')">-</button>
<div id="divTag" style="display:none">
Information to display with plus sign pressed
</div>
</body>
</html>

**baldwingrand** · 03-31-2009 01:00 PM

This works very well- but, I have more than one <div> tag I need to show/hide- the "divMatch1" and "divMatch2" - is there a function that will allow for passing more than one div in at a time?

**JMRKER** · 03-31-2009 01:14 PM

Sure.

What do your script tag IDs look like?
How many IDs at a time?

**baldwingrand** · 03-31-2009 01:39 PM

Well, there are 4, but not sure if I need to reference them all. The general idea is:

if you select "+":

divSelect1 - 'block'
divSelect2 - 'block'
divMatch2 - 'block'
divMatch1 - 'none'

if you select "-":

divMatch1 - 'block'
divSelect1 - 'block'
divSelect2 - 'none'
divMatch2 - 'none'

**JMRKER** · 03-31-2009 03:39 PM

Will this work for you?

Code:

<html>
<head>
<title>Show Hide  DIV</title>
<script type="text/javascript">
// From: http://www.webdeveloper.com/forum/showthread.php?p=993689#post993689

var divOrder = ['divSelect1','divSelect2','divMatch1','divMatch2'];

function Show(info) {
  var temp = info.split(',');
  for (var i=0; i<temp.length; i++) {
    IDS = divOrder[i];  // alert(i+' : '+IDS);
    if (temp[i] == 0) {
      document.getElementById(IDS).style.display = 'none';
    } else {
      document.getElementById(IDS).style.display = 'block';
    }
  }
}
</script>
</head>
<body onLoad="Show('0,0,0,0')">
<button onclick="Show('1,1,0,1')">+</button>
<button onclick="Show('1,0,1,0')">-</button>
<div id="divSelect1" style="display:none">divSelect1</div>
<div id="divSelect2" style="display:none">divSelect2</div>
<div id="divMatch1" style="display:none">divMatch1</div>
<div id="divMatch2" style="display:none">divMatch2</div>
</body>
</html>

Could add a check to assure length of 'info' passed to "Show(info)" function was the same length as the divOrder array. I'll leave that as an exercise for the student.

**baldwingrand** · 03-31-2009 05:39 PM

This works beautifully. Thank you so much for all your help!

**JMRKER** · 03-31-2009 05:53 PM

You're most welcome.
Glad I was able to help.
Good Luck!

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