function getObjectById(id_elemento) {
	var elemento;
	if(document.getElementById)
		elemento = document.getElementById(id_elemento);
	else
		elemento = document.all[id_elemento];
	return elemento;
};

function ltrim(stringa){
	while (stringa.substring(0,1) == ' '){
        	stringa = stringa.substring(1, stringa.length);
	}
	return stringa;
};

function validate(obj, regexpr) {
	var pat = new RegExp(regexpr, "gi");
	var toFind = getObjectById(obj).value;
	if (pat.exec(toFind)==null) {
		return true;
	} else {
		return false;
	}
};

function onload() {
	var argToCheck = '?subcat=';
	var url = top.frames[0].location.valueOf();
	alert("Ok1");
	alert(url.indexOf(argToCheck));
	if (url.indexOf(argToCheck)!=-1) {
		alert("Ok");
		getObjectById('toFind').value = url.substring(url.indexOf(argToCheck)+argToCheck.length);
		getObjectById('toFind').focus();
	}
};