crautos.com tiene muchos problemas de usabilidad, este script arregla unos cuantos

crautos.user.js

// ==UserScript==
// @name           crautos
// @namespace      crautos
// @include        http://crautos.com/usados/economicos-usearch.cfm
// @include        http://crautos.com/usados/economicos-usearch2.cfm*
// @include        http://crautos.com/usados/economicos-usearch2.cfm*
// @include        http://www.crautos.com/usados/economicos-usearch.cfm
// @include        http://www.crautos.com/usados/economicos-usearch2.cfm*
// @include        http://www.crautos.com/usados/economicos-usearch2.cfm*
// ==/UserScript==


model_name_xpath = '/html/body/div/table/tbody/tr[2]/td/div/div[2]/div/div/div/div/form/div/table/tbody/tr/td/div/table/tbody/tr/td[2]/div/table/tbody/tr/td/table/tbody/tr[6]/td[2]/input'
min_price_xpath = '/html/body/div/table/tbody/tr[2]/td/div/div[2]/div/div/div/div/form/div/table/tbody/tr/td/div/table/tbody/tr/td[2]/div/table/tbody/tr/td/table/tbody/tr[11]/td[2]/input';
max_price_xpath = '/html/body/div/table/tbody/tr[2]/td/div/div[2]/div/div/div/div/form/div/table/tbody/tr/td/div/table/tbody/tr/td[2]/div/table/tbody/tr/td/table/tbody/tr[11]/td[2]/input[2]';


//hide_crap(to_hide);


delete_crap();
fix_jslinks();
fix_images();
clear_textfield_if_default(model_name_xpath, 'No Importa');
console.log('done!');
// clear_textfield_if_default(min_price_xpath, '1');
// clear_textfield_if_default(max_price_xpath, '99999999');


function delete_crap () {
	var form = $('html.js body div table tbody tr td div div div div div div form').detatch();
	if (form) $('body').empty().append(form).css('background', 'white');
}

function clear_textfield_if_default(elem_xpath, default_string){
	node = document.evaluate(elem_xpath, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null ).singleNodeValue;
	node.addEventListener('blur', function(){ if(node.value == ''){node.value = default_string;}}, true);
	node.addEventListener('focus', function(){ if(node.value == default_string){node.value = '';}}, true);
}

function hide_crap(array){
	for(var i = 0; i < array.length; i++){
		hide_xpath(array[i]);
	}	
	$('div.usado-agencia').remove();
	$('#FlashID').remove();

}

function fix_jslinks(){
	jsLinks = document.evaluate("//a[starts-with(@href, 'javascript:det')]", document, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
	for (i = 0; i < jsLinks.snapshotLength; i++){	
		permalink = jsLinks.snapshotItem(i).href.replace(/javascript:det\('(\d+)'\)/, "http://crautos.com/usados/economicos-useddetail.cfm?rmax=30&c=$1");
		jsLinks.snapshotItem(i).href = permalink;
	}
}

function fix_images(){
	var H=["mouseover","mouseout"];
	if(document.addEventListener)
		for(j in H)
			document.addEventListener(H[j],function(e){e.stopPropagation();},true);	
}

function hide_xpath(path){	
	node = document.evaluate(path, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null );
	node = node.singleNodeValue;
	if(node){ node.style.display = 'none'; }
}