function replace(string,text,by) { var strLength = string.length, txtLength = text.length; if ((strLength == 0) || (txtLength == 0)) return string; var i = string.indexOf(text); if ((!i) && (text != string.substring(0,txtLength))) return string; if (i == -1) return string; var newstr = string.substring(0,i) + by; if (i+txtLength < strLength) newstr += replace(string.substring(i+txtLength,strLength),text,by); return newstr; } function count_strings(string, word) { var substrings = string.split(word); return substrings.length - 1; } function preview(textarea_obj,css) { var txt = get_textarea(textarea_obj); var pop_win = window.open("", "win", "width=600,height=300"); pop_win.document.open("text/html", "replace"); pop_win.document.write(""); pop_win.document.write(""); pop_win.document.write("Preview"); pop_win.document.write(""); pop_win.document.write(""); pop_win.document.write(""); pop_win.document.write("
"); //pop_win.document.write(replace(txt,"\n","
")); pop_win.document.write(txt); pop_win.document.write("
"); pop_win.document.write(""); pop_win.document.write(""); pop_win.focus(); } function get_selection() { if (document.getSelection) { var txt = document.getSelection(); } else if (document.selection && document.selection.createRange) { var range = document.selection.createRange(); var txt = range.text; } else { var txt = "Sorry, this is not supported with your browser."; } return(txt); } function get_textarea(textarea_obj) { return(textarea_obj.value); } function set_textarea(textarea_obj,txt) { textarea_obj.value = txt; } function append_textarea(textarea_obj,txt) { textarea_obj.value += txt; } function bold(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,""); } else if (txt != null) { //var new_txt = existing_txt.replace(txt,""+txt+""); var new_txt = replace(existing_txt,txt,""+txt+""); set_textarea(textarea_obj,new_txt); } } function underline(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,""); } else if (txt != null) { var new_txt = replace(existing_txt,txt,""+txt+""); set_textarea(textarea_obj,new_txt); } } function italicize(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,""); } else if (txt != null) { var new_txt = replace(existing_txt,txt,""+txt+""); set_textarea(textarea_obj,new_txt); } } function center(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,"
"); } else if (txt != null) { var new_txt = existing_txt.replace(txt,"
"+txt+"
"); set_textarea(textarea_obj,new_txt); } } function right(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,"
"); } else if (txt != null) { var new_txt = existing_txt.replace(txt,"
"+txt+"
"); set_textarea(textarea_obj,new_txt); } } function hyperlink(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,""); } else if (txt != null) { var new_txt = existing_txt.replace(txt,""+txt+""); set_textarea(textarea_obj,new_txt); } } function mailto(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,""); } else if (txt != null) { var new_txt = existing_txt.replace(txt,""+txt+""); set_textarea(textarea_obj,new_txt); } } function paragraph(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,"

"); } else if (txt != null) { var new_txt = existing_txt.replace(txt,"

"+txt+"

"); set_textarea(textarea_obj,new_txt); } } function linebreak(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { //append_textarea(textarea_obj,"
"); append_textarea(textarea_obj,"\n"); } else if (txt != null) { //var new_txt = existing_txt.replace(txt,"
"+txt+""); var new_txt = existing_txt.replace(txt,"\n"+txt+""); set_textarea(textarea_obj,new_txt); } textarea_obj.focus( ); textarea_obj.select( ); } function code(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,""); } else if (txt != null) { var new_txt = existing_txt.replace(txt,""+txt+""); set_textarea(textarea_obj,new_txt); } } function list(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,""); } else if (txt != null) { var new_txt = existing_txt.replace(txt,""); set_textarea(textarea_obj,new_txt); } } function table(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,"
"); } else if (txt != null) { var new_txt = existing_txt.replace(txt,"
"+txt+"
"); set_textarea(textarea_obj,new_txt); } } function image(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,""); } else if (txt != null) { var new_txt = existing_txt.replace(txt,""+txt+""); set_textarea(textarea_obj,new_txt); } } function quote(textarea_obj) { var txt = get_selection(); var existing_txt = get_textarea(textarea_obj); var string_count = count_strings(existing_txt,txt); if (txt == "" || string_count > 1) { append_textarea(textarea_obj,""""); } else if (txt != null) { var new_txt = existing_txt.replace(txt,"""+txt+"""); set_textarea(textarea_obj,new_txt); } }