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if(!window.config) var config = {};
config.Clipboard = {
pathToFlash: "/testsite/generic scripts/clipboard.swf",
//see <a href="http://javascript.internet.com/forms/clipboard-copy.html" >http://javascript.internet.com/forms/clipboard-copy.html</a>
//SWF file can be downloaded at <a href="http://javascriptsource.com/forms/clipboardFlash.zip" >http://javascriptsource.com/forms/clipboardFlash.zip</a>
flashCopierID: "flashCopier"
};

//static Clipboard object
var Clipboard = function()
{
//copies a string to the clipboard
function copy(strToCopy)
{
if(!strToCopy) return false;

if(window.clipboardData && window.clipboardData.setData("text", strToCopy)) return true;	//IE

var holder = document.createElement("textarea");
holder.innerText = strToCopy;
if(holder.createTextRange && holder.createTextRange().execCommand("copy")) return true;	//IE

return flashCopy(strToCopy);	//use the Flash copier
}

//copies the currently selected text to the clipboard
function copySelection()
{
var selectionText = "";
//order matters here: Opera sparcely supports the TextRange object (IE) as well
if(window.getSelection) selectionText = window.getSelection();	//(Selection object).toString()
if(document.selection) selectionText = document.selection.createRange().text;	//IE; (TextRange object).text

return copy(selectionText);
}

//use a Flash file to copy to clipboard (assuming Flash is enabled in the browser, of course)
//see <a href="http://javascript.internet.com/forms/clipboard-copy.html" >http://javascript.internet.com/forms/clipboard-copy.html</a>
//SWF file can be downloaded at <a href="http://javascriptsource.com/forms/clipboardFlash.zip" >http://javascriptsource.com/forms/clipboardFlash.zip</a>
function flashCopy(strToCopy)
{
if(!strToCopy || !window.config.Clipboard.pathToFlash) return false;

var holder = document.getElementById(window.config.Clipboard.flashCopierID);
if(!holder)
{
holder = document.createElement("div");
holder.id = window.config.Clipboard.flashCopierID;

//holder.style.display = "none";	//the copy fails with this
holder.style.position = "absolute";
holder.style.zIndex = "-1";

document.body.appendChild(holder);
}
holder.innerHTML = '<embed src="'+window.config.Clipboard.pathToFlash+'" FlashVars="clipboard='+
escape(strToCopy)+'" type="application/x-shockwave-flash"></embed>';

return null;	//no way to know whether it was successful or not
}

//returns the contents of the clipboard
function paste()
{
if(window.clipboardData)	//IE
{
return window.clipboardData.getData("text") || "";
}
else
{
var textarea = document.createElement("textarea");
if(textarea.createTextRange)	//IE
{
textarea.createTextRange().execCommand("paste");
return textarea.innerText;
}
}
return "";
}

//clears the clipboard or sets it to a period if it can't be cleared
function clear()
{
if(window.clipboardData)	//IE
{
window.clipboardData.clearData();
return true;
}
else return copy(".");
}

return {
copy: copy,
copySelection: copySelection,
paste: paste,
clear: clear
};
}();	//initialize Clipboard

source