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Javascript Drop Down Menu Change Field

Hey guys, I am very new to Javascript and usually use PHP for this sort of a thing but here’s the deal.

I have a dropdown menu and two checkboxs and when the user selects something from the dropdown menu I need it to change the text in the textbox field to 80. Then if the user checks off the first checkbox it’ll add 20 to the total and if they select the next checkbox it’ll add 30. When they change the textbox value it should uncheck the checkboxs and bring the value back to 80.

I’m so lost on how to do this in Javascript and I’d like some help or links to help me complete my goal ?

Thanks!
-Myworldplz

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JavaScript

2 Comments(s)

Copy linkTweet thisAlerts:
@myworldplzauthorNov 17.2010 — Bump ?

Any links, I don't need the source spilled out for me just some advice on where to go
Copy linkTweet thisAlerts:
@shrikrishnatechNov 17.2010 — [B]HTML Code[/B]

[CODE]<ul id="sddm">
<li><a href="#"
onmouseover="mopen('m1')"
onmouseout="mclosetime()">Home</a>
<div id="m1"
onmouseover="mcancelclosetime()"
onmouseout="mclosetime()">
<a href="#">HTML Drop Down</a>
<a href="#">DHTML Menu</a>
<a href="#">JavaScript DropDown</a>
<a href="#">Cascading Menu</a>
<a href="#">CSS Horizontal Menu</a>
</div>
</li>
<li><a href="#"
onmouseover="mopen('m2')"
onmouseout="mclosetime()">Download</a>
<div id="m2"
onmouseover="mcancelclosetime()"
onmouseout="mclosetime()">
<a href="#">ASP Dropdown</a>
<a href="#">Pulldown menu</a>
<a href="#">AJAX Drop Submenu</a>
<a href="#">DIV Cascading Menu</a>
</div>
</li>
<li><a href="#">Order</a></li>
<li><a href="#">Help</a></li>
<li><a href="#">Contact</a></li>
</ul>
<div style="clear:both"></div>
[/CODE]


[B]CSS Code[/B]

[CODE]#sddm
{ margin: 0;
padding: 0;
z-index: 30}

#sddm li
{ margin: 0;
padding: 0;
list-style: none;
float: left;
font: bold 11px arial}

#sddm li a
{ display: block;
margin: 0 1px 0 0;
padding: 4px 10px;
width: 60px;
background: #5970B2;
color: #FFF;
text-align: center;
text-decoration: none}

#sddm li a:hover
{ background: #49A3FF}

#sddm div
{ position: absolute;
visibility: hidden;
margin: 0;
padding: 0;
background: #EAEBD8;
border: 1px solid #5970B2}

#sddm div a
{ position: relative;
display: block;
margin: 0;
padding: 5px 10px;
width: auto;
white-space: nowrap;
text-align: left;
text-decoration: none;
background: #EAEBD8;
color: #2875DE;
font: 11px arial}

#sddm div a:hover
{ background: #49A3FF;
color: #FFF}
[/CODE]


[B]JavaScript Code[/B]

[CODE]var timeout = 500;
var closetimer = 0;
var ddmenuitem = 0;

// open hidden layer
function mopen(id)
{
// cancel close timer
mcancelclosetime();

// close old layer
if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';

// get new layer and show it
ddmenuitem = document.getElementById(id);
ddmenuitem.style.visibility = 'visible';

}
// close showed layer
function mclose()
{
if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
}

// go close timer
function mclosetime()
{
closetimer = window.setTimeout(mclose, timeout);
}

// cancel close timer
function mcancelclosetime()
{
if(closetimer)
{
window.clearTimeout(closetimer);
closetimer = null;
}
}

// close layer when click-out
document.onclick = mclose;
[/CODE]


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