https://www.care-line.co.uk/WebResource.axd?d=RY3vACOQfBvGVbkBeDzT…&t=639263632066816605&build=172184

1/*
2* Clear Default Text: functions for clearing and replacing default text in
3* <input> elements.
4*/
5function registerClearDefaultItem(id, DefaultText) {
6
7    try {
8        theInput = document.getElementById(id);
9        addEvent(theInput, 'focus', clearDefaultText, false);
10        addEvent(theInput, 'blur', replaceDefaultText, false);
11
12        /* Save the current value */
13        if (theInput.value != '') {
14
15            theInput.defaultText = DefaultText;
16        }
17    } catch (e) { }
18}
19
20function clearDefaultText(e) {
21    var target = window.event ? window.event.srcElement : e ? e.target : null;
22    if (!target) return;
23
24    if (target.value == target.defaultText) {
25        target.value = '';
26    }
27}
28
29function replaceDefaultText(e) {
30    var target = window.event ? window.event.srcElement : e ? e.target : null;
31    if (!target) return;
32
33    if (target.value == '' && target.defaultText) {
34        target.value = target.defaultText;
35    }
36}
37/*
38* Event Handling: Cross Browser compliant event handling
39* <input> elements.
40*/
41function addEvent(element, eventType, lamdaFunction, useCapture) {
42    try {
43        if (element.addEventListener) {
44            element.addEventListener(eventType, lamdaFunction, useCapture);
45            return true;
46        } else if (element.attachEvent) {
47            var r = element.attachEvent('on' + eventType, lamdaFunction);
48            return r;
49        } else {
50            return false;
51        }
52    } catch (e) { }
53}
54
55function killEvent(eventObject) {
56    if (eventObject && eventObject.stopPropagation) {
57        eventObject.stopPropagation();
58    }
59    if (window.event && window.event.cancelBubble) {
60        window.event.cancelBubble = true;
61    }
62    if (eventObject && eventObject.preventDefault) {
63        eventObject.preventDefault();
64    }
65    if (window.event) {
66        window.event.returnValue = false;
67    }
68}
69
70function cancelEventSafari() {
71    return false;
72}
73
74function GetEventSrcElement(eventElement) {
75    if (eventElement.srcElement) {
76        return eventElement.srcElement
77    }
78    // Netscape and Firefox
79    else if (eventElement.target) {
80        return eventElement.target
81    }
82}
83
84//General
85function ContensisSubmitFromTextbox(event, SubmitButton) {
86    var btn = document.getElementById(SubmitButton)
87    if (document.all) {
88        if (event.keyCode == 13) {
89            event.returnValue = false;
90            event.cancel = true;
91            killEvent(event); // [Added BJ 30/01/2012 for IE9]
92            btn.click();
93        }
94    }
95    else if (document.getElementById) {
96        if (event.which == 13) {
97            event.returnValue = false;
98            event.cancel = true;
99            killEvent(event); // [Added iG 18/01/2012]
100            btn.click();
101        } else {
102            // Do nothing
103        }
104    }
105    else if (document.layers) {
106        if (event.which == 13) {
107            event.returnValue = false;
108            event.cancel = true;
109            btn.click();
110        } else {
111            // do nothing
112        }
113    }
114}
115//used for linkbuttons etc.
116function registerSubmitOnReturn(id, eventTarget) {
117    var Textbox = document.getElementById(id);
118    if (Textbox) {
119        Textbox.LinkButtonID = eventTarget
120        addEvent(Textbox, 'keypress', handleSubmitOnReturn, false)
121    }
122}
123function handleSubmitOnReturn(e) {
124    if (e.keyCode == 13) {
125        //alert("Submit")
126        e.cancelBubble = true;
127        e.returnValue = false;
128        var el = GetEventSrcElement(e)
129        __doPostBack(el.LinkButtonID, '')
130    }
131}
132
133
134function URLEncode(value) {
135    // The Javascript escape and unescape functions do not correspond
136    // with what browsers actually do...
137    var SAFECHARS = "0123456789" + 				// Numeric
138                    "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + // Alphabetic
139                    "abcdefghijklmnopqrstuvwxyz" +
140                    "-_.!~*'()"; 				// RFC2396 Mark characters
141    var HEX = "0123456789ABCDEF";
142
143    var plaintext = value;
144    var encoded = "";
145    for (var i = 0; i < plaintext.length; i++) {
146        var ch = plaintext.charAt(i);
147        if (ch == " ") {
148            encoded += "+"; 			// x-www-urlencoded, rather than %20
149        } else if (SAFECHARS.indexOf(ch) != -1) {
150            encoded += ch;
151        } else {

152            var charCode = ch.charCodeAt(0);
153            if (charCode > 255) {
154                alert("Unicode Character '"
155                        + ch
156                        + "' cannot be encoded using standard URL encoding.\n" +
157                          "(URL encoding only supports 8-bit characters.)\n" +
158                          "A space (+) will be substituted.");
159                encoded += "+";
160            } else {
161                encoded += "%";
162                encoded += HEX.charAt((charCode >> 4) & 0xF);
163                encoded += HEX.charAt(charCode & 0xF);
164            }
165        }
166    } // for
167    return encoded;
168}
169
170//This is only required when email obfuscation is enabled
171function UnObfuscateHyperlinks() {
172    var links = document.getElementsByTagName('a');
173    for (var l = 0; l < links.length; l++) {
174        if (!links[l].onclick) {
175            links[l].onclick = function() {
176                link_click(this);
177            }
178        }
179    }
180}
181
182function link_click(anchor) {
183    var href = anchor.getAttribute('href');
184    if (href) { // [Altered by iG 28/03/2012] - Check if href is not undefined
185        var address = href.replace(/.*mailcontacts\//, '');
186        if (href != address) {
187            address = address.replace(/\+\+/, '@');
188            address = address.replace(/\+/g, '.');
189            anchor.setAttribute('href', 'mailto:' + address);
190        }
191    }
192}
193
194function IEFixBackgroundImageFlicker() {
195    try {

196        document.execCommand('BackgroundImageCache', false, true);
197    } catch (e) { }
198}
199
200//This function allows you to attach the print function to an element in the dom for its click event.
201function AttachPrintHandler(elementID) {
202    var element = document.getElementById(elementID);
203    addEvent(element, 'click', function(e) {
204        window.print();
205        killEvent(e);
206    },
207        false);
208    addEvent(document, 'keydown', function(e) {
209        if (e.ctrlKey) {
210            if ((e.keyCode == 80) || (e.keyCode == 112)) {
211                window.print();
212                killEvent(e);
213            }
214        }
215    },
216        false);
217}
218