function init()
{
	document.getElementById("tbxCerca").onkeypress=cercaKP;
}
function cercaKP(e)
{
	var I,s;
	if(!(e=(e||event)))return;
	
	switch(e.which||e.keyCode)
	{
		case 13:
		case 10:
			I=document.getElementById("tbxCerca");
			s=I.value.replace(/^[ \t\r\n]+|[ \t\r\n]+$/g,"");
			e.cancelBubble=!(e.returnValue=false);
			if(e.preventDefault)e.preventDefault();
			if(e.stopPropagation)e.stopPropagation();
			if(s.length)
				window.location.href="cerca.aspx?w="+(window["encodeURIComponent"]?encodeURIComponent(s):escape(s));
			else
			{
				if(I.select)I.select();
				I.focus();
			}
			return false;
	}
}