function NumOnly() {
	var el, key;
	el = window.event.srcElement;
	
	if (el.tagName == "INPUT") {
		key = window.event.keyCode;
		if ((key < 48) || (key > 57)) { //Povoli se pouze "0" (48) až "9" (57)
			window.event.returnValue = false;
		};
		window.event.cancelBubble = true;
	};
};

function flash() {
	if(useFlash) {
		document.write("<div class='main-left-fl'>");
		document.write("<object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000'"); 
		document.write("codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=4,0,2,0'"); 
		document.write("width='316' height='345'>");
		document.write("<param name=movie value='obrazky/seznamka.swf'>");
		document.write("<param name=quality value=high>");
		document.write("<embed src='obrazky/seznamka.swf' quality=high"); 
		document.write("pluginspage='http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash'"); 
		document.write("type='application/x-shockwave-flash' width='316' height='345'>");
		document.write(" </embed> ");
		document.write("</object>");
		document.write("</div>");
	} else {
		document.write("<div class='main-left-nofl'>&nbsp;");
		document.write("</div>");
	}
}