1 | /* Essential javascripts, used a lot. |
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2 | * These should be placed inline |
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3 | * We have to be certain they are loaded before anything that uses them |
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4 | */ |
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5 | |
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6 | // check for ie5 mac |
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7 | var bugRiddenCrashPronePieceOfJunk = ( |
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8 | navigator.userAgent.indexOf('MSIE 5') != -1 |
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9 | && |
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10 | navigator.userAgent.indexOf('Mac') != -1 |
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11 | ) |
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12 | |
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13 | // check for W3CDOM compatibility |
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14 | var W3CDOM = (!bugRiddenCrashPronePieceOfJunk && |
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15 | document.getElementsByTagName && |
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16 | document.createElement); |
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17 | |
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18 | // cross browser function for registering event handlers |
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19 | function registerEventListener(elem, event, func) { |
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20 | if (elem.addEventListener) { |
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21 | elem.addEventListener(event, func, false); |
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22 | return true; |
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23 | } else if (elem.attachEvent) { |
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24 | var result = elem.attachEvent("on"+event, func); |
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25 | return result; |
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26 | } |
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27 | // maybe we could implement something with an array |
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28 | return false; |
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29 | } |
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30 | |
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31 | // cross browser function for unregistering event handlers |
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32 | function unRegisterEventListener(elem, event, func) { |
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33 | if (elem.removeEventListener) { |
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34 | elem.removeEventListener(event, func, false); |
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35 | return true; |
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36 | } else if (elem.detachEvent) { |
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37 | var result = elem.detachEvent("on"+event, func); |
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38 | return result; |
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39 | } |
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40 | // maybe we could implement something with an array |
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41 | return false; |
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42 | } |
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43 | |
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44 | function registerPloneFunction(func) { |
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45 | // registers a function to fire onload. |
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46 | registerEventListener(window, "load", func); |
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47 | } |
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48 | |
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49 | function unRegisterPloneFunction(func) { |
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50 | // unregisters a function so it does not fire onload. |
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51 | unRegisterEventListener(window, "load", func); |
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52 | } |
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53 | |
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54 | function getContentArea() { |
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55 | // returns our content area element |
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56 | if (W3CDOM) { |
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57 | var node = document.getElementById('region-content'); |
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58 | if (!node) { |
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59 | node = document.getElementById('content'); |
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60 | } |
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61 | return node; |
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62 | } |
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63 | } |
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