Select All Text in any element, cross-browser

selectAllText.js

function selectAllText (elem) {
	var range, selection;
	// A jQuery selector should pass through too
	elem = (elem.jquery && elem.length) ? elem[0] : elem;
	if ( !elem ) {
		return;
	} else if ( elem.nodeName.match(/^(INPUT|TEXTAREA)$/i) ) {
		elem.focus();
		elem.select();
	} else if ( typeof document.body.createTextRange === "function" ) {
		// IE or Opera <10.5
		range = document.body.createTextRange();
		range.moveToElementText(elem);
		range.select();
	} else if ( typeof window.getSelection === "function" ) {
		selection = window.getSelection();
		if ( typeof selection.setBaseAndExtent === "function" ) {
			// Safari
			selection.setBaseAndExtent(elem, 0, elem, 1);
		} else if ( typeof selection.addRange === "function"
			&& typeof selection.removeAllRanges === "function"
			&& typeof document.createRange === "function" ) {
			// Mozilla or Opera 10.5+
			range = document.createRange();
			range.selectNodeContents(elem);
			selection.removeAllRanges();
			selection.addRange(range);	
		}
	}
}