| blob | 6e41a5f1cdc78c5c46e6f74e0fbb2b1080158f25 |
1 //GENERAL UTILITY FUNCTIONS AND VARIABLES\r
2 \r
3 //PAGE DIMENSION FUNCTIONS\r
4 function PageDim(){\r
5 //Get the page width and height\r
6 this.W = 600;\r
7 this.H = 400;\r
8 this.W = document.getElementsByTagName('body')[0].clientWidth;\r
9 this.H = document.getElementsByTagName('body')[0].clientHeight;\r
10 }\r
11 \r
12 var pg = null;\r
13 \r
14 function GetPageXY(El) {\r
15 var XY = {x: 0, y: 0};\r
16 while(El){\r
17 XY.x += El.offsetLeft;\r
18 XY.y += El.offsetTop;\r
19 El = El.offsetParent;\r
20 }\r
21 return XY;\r
22 }\r
23 \r
24 function GetScrollTop(){\r
25 if (document.documentElement && document.documentElement.scrollTop){\r
26 return document.documentElement.scrollTop;\r
27 }\r
28 else{\r
29 if (document.body){\r
30 return document.body.scrollTop;\r
31 }\r
32 else{\r
33 return window.pageYOffset;\r
34 }\r
35 }\r
36 }\r
37 \r
38 function GetViewportHeight(){\r
39 if (window.innerHeight){\r
40 return window.innerHeight;\r
41 }\r
42 else{\r
43 return document.getElementsByTagName('body')[0].clientHeight;\r
44 }\r
45 }\r
46 \r
47 function TopSettingWithScrollOffset(TopPercent){\r
48 var T = Math.floor(GetViewportHeight() * (TopPercent/100));\r
49 return GetScrollTop() + T; \r
50 }\r
51 \r
52 //CODE FOR AVOIDING LOSS OF DATA WHEN BACKSPACE KEY INVOKES history.back()\r
53 var InTextBox = false;\r
54 \r
55 function SuppressBackspace(e){ \r
56 if (InTextBox == true){return;}\r
57 if (C.ie) {\r
58 thisKey = window.event.keyCode;\r
59 }\r
60 else {\r
61 thisKey = e.keyCode;\r
62 }\r
63 \r
64 var Suppress = false;\r
65 \r
66 if (thisKey == 8) {\r
67 Suppress = true;\r
68 }\r
69 \r
70 if (Suppress == true){\r
71 if (C.ie){\r
72 window.event.returnValue = false; \r
73 window.event.cancelBubble = true;\r
74 }\r
75 else{\r
76 e.preventDefault();\r
77 }\r
78 }\r
79 }\r
80 \r
81 if (C.ie){\r
82 document.attachEvent('onkeydown',SuppressBackspace);\r
83 window.attachEvent('onkeydown',SuppressBackspace);\r
84 }\r
85 else{\r
86 if (window.addEventListener){\r
87 window.addEventListener('keypress',SuppressBackspace,false);\r
88 }\r
89 }\r
90 \r
91 function ReduceItems(InArray, ReduceToSize){\r
92 var ItemToDump=0;\r
93 var j=0;\r
94 while (InArray.length > ReduceToSize){\r
95 ItemToDump = Math.floor(InArray.length*Math.random());\r
96 InArray.splice(ItemToDump, 1);\r
97 }\r
98 }\r
99 \r
100 function Shuffle(InArray){\r
101 var Num;\r
102 var Temp = new Array();\r
103 var Len = InArray.length;\r
104 \r
105 var j = Len;\r
106 \r
107 for (var i=0; i<Len; i++){\r
108 Temp[i] = InArray[i];\r
109 }\r
110 \r
111 for (i=0; i<Len; i++){\r
112 Num = Math.floor(j * Math.random());\r
113 InArray[i] = Temp[Num];\r
114 \r
115 for (var k=Num; k < (j-1); k++) {\r
116 Temp[k] = Temp[k+1];\r
117 }\r
118 j--;\r
119 }\r
120 return InArray;\r
121 }\r
122 \r
123 function WriteToInstructions(Feedback) {\r
124 document.getElementById('InstructionsDiv').innerHTML = Feedback;\r
125 [inclPreloadImages]\r
126 RefreshImages();\r
127 [/inclPreloadImages]\r
128 }\r
129 \r
130 \r
131 [inclPreloadImages]\r
132 Imgs = new Array();\r
133 \r
134 function PreloadImages(){\r
135 var a = PreloadImages.arguments;\r
136 for (var i=0; i<a.length; i++){\r
137 Imgs[i] = new Image();\r
138 Imgs[i].src = a[i];\r
139 }\r
140 }\r
141 \r
142 function RefreshImages(){\r
143 for (var i=0; i<document.images.length; i++){\r
144 if (document.images[i].name.substring(0,6) != 'NavBar'){\r
145 document.images[i].src = document.images[i].src;\r
146 }\r
147 }\r
148 }\r
149 [/inclPreloadImages]\r
150 \r
151 function EscapeDoubleQuotes(InString){\r
152 return InString.replace(/"/g, '"')\r
153 }\r
154 \r
155 function TrimString(InString){\r
156 var x = 0;\r
157 \r
158 if (InString.length != 0) {\r
159 while ((InString.charAt(InString.length - 1) == '\u0020') || (InString.charAt(InString.length - 1) == '\u000A') || (InString.charAt(InString.length - 1) == '\u000D')){\r
160 InString = InString.substring(0, InString.length - 1)\r
161 }\r
162 \r
163 while ((InString.charAt(0) == '\u0020') || (InString.charAt(0) == '\u000A') || (InString.charAt(0) == '\u000D')){\r
164 InString = InString.substring(1, InString.length)\r
165 }\r
166 \r
167 while (InString.indexOf(' ') != -1) {\r
168 x = InString.indexOf(' ')\r
169 InString = InString.substring(0, x) + InString.substring(x+1, InString.length)\r
170 }\r
171 \r
172 return InString;\r
173 }\r
174 \r
175 else {\r
176 return '';\r
177 }\r
178 }\r
179 \r
180 function FindLongest(InArray){\r
181 if (InArray.length < 1){return -1;}\r
182 \r
183 var Longest = 0;\r
184 for (var i=1; i<InArray.length; i++){\r
185 if (InArray[i].length > InArray[Longest].length){\r
186 Longest = i;\r
187 }\r
188 }\r
189 return Longest;\r
190 }\r
191 \r
192 //UNICODE CHARACTER FUNCTIONS\r
193 function IsCombiningDiacritic(CharNum){\r
194 var Result = (((CharNum >= 0x0300)&&(CharNum <= 0x370))||((CharNum >= 0x20d0)&&(CharNum <= 0x20ff)));\r
195 Result = Result || (((CharNum >= 0x3099)&&(CharNum <= 0x309a))||((CharNum >= 0xfe20)&&(CharNum <= 0xfe23)));\r
196 return Result;\r
197 }\r
198 \r
199 function IsCJK(CharNum){\r
200 return ((CharNum >= 0x3000)&&(CharNum < 0xd800));\r
201 }\r
202 \r
203 //SETUP FUNCTIONS\r
204 //BROWSER WILL REFILL TEXT BOXES FROM CACHE IF NOT PREVENTED\r
205 function ClearTextBoxes(){\r
206 var NList = document.getElementsByTagName('input');\r
207 for (var i=0; i<NList.length; i++){\r
208 if ((NList[i].id.indexOf('Guess') > -1)||(NList[i].id.indexOf('Gap') > -1)){\r
209 NList[i].value = '';\r
210 }\r
211 if (NList[i].id.indexOf('Chk') > -1){\r
212 NList[i].checked = '';\r
213 }\r
214 }\r
215 }\r
216 \r
217 //EXTENSION TO ARRAY OBJECT\r
218 function Array_IndexOf(Input){\r
219 var Result = -1;\r
220 for (var i=0; i<this.length; i++){\r
221 if (this[i] == Input){\r
222 Result = i;\r
223 }\r
224 }\r
225 return Result;\r
226 }\r
227 Array.prototype.indexOf = Array_IndexOf;\r
228 \r
229 //IE HAS RENDERING BUG WITH BOTTOM NAVBAR\r
230 function RemoveBottomNavBarForIE(){\r
231 if ((C.ie)&&(document.getElementById('Reading') != null)){\r
232 if (document.getElementById('BottomNavBar') != null){\r
233 document.getElementById('TheBody').removeChild(document.getElementById('BottomNavBar'));\r
234 }\r
235 }\r
236 }\r
237 \r