function print_preview() {
	// Switch the stylesheet
	setActiveStyleSheet('Print Preview');
	
	// Create preview message
	$("div.print_prev").animate({
				height: 'show'
			}, 'fast');

	// Print the page
	window.print();
}

function cancel_print_preview() {
	// Switch back stylesheet
	setActiveStyleSheet('notitia');
	$("div.print_prev").animate({
				height: 'hide'
			}, 'fast');
}

function setActiveStyleSheet(title) {
   var i, a, main;
   for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
     if(a.getAttribute("rel").indexOf("style") != -1
        && a.getAttribute("title")) {
       a.disabled = true;
       if(a.getAttribute("title") == title) a.disabled = false;
     }
   }
}