// clase para detección de navegador
function lib_bwcheck(){ //Browsercheck (needed)
        this.ver=navigator.appVersion; this.agent=navigator.userAgent
        this.dom=document.getElementById?1:0
        this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;
        this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom)?1:0;
        this.ie4=(document.all && !this.dom)?1:0;
        this.ie=this.ie4||this.ie5||this.ie6
        this.mac=this.agent.indexOf("Mac")>-1
        this.opera5=this.agent.indexOf("Opera 5")>-1
        this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0;
        this.ns4=(document.layers && !this.dom)?1:0;
        this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5 || this.dom)
        return this
}
var bw=new lib_bwcheck()

// submit form
function submitForm (form_name) {
	var frm = bw.ie4?document.all[form_name]:document.getElementById(form_name) ;	
	if (frm) {
		frm.method = "POST" ;
		frm.submit () ;
	}
}
// select element
function setFocusElement (element) {
	var el = bw.ie4?document.all[element]:document.getElementById(element) ; 
	if (el) {
		el.style.border = "1px solid #cc0000;" ;
		el.focus () ;
	}
}
// key press
function key (e, form) {
	var keynum ;
	if(window.event)
		keynum = e.keyCode ; 
	else
		keynum = e.which ;
	if (keynum == 13) {
		var frm = bw.ie4?document.all[form]:document.getElementById(form) ;
		frm.method = "POST" ;
		frm.submit () ;
	}
}
// change languaje
function changeLanguaje (lang) {
	var frm = bw.ie4?document.all['formLanguaje']:document.getElementById('formLanguaje') ;
	if(frm) {
		frm.Lang.value = lang ;
		frm.Url.value = window.location ;
		frm.method = "POST" ;
		frm.submit () ;	
	}	
}
// add to cart
function addToCart (item_id) {
	var frm = bw.ie4?document.all['formShopCart']:document.getElementById('formShopCart') ;
	frm.item_id.value = item_id ;
	frm.method = "POST" ;
	frm.submit () ;
}
// cart action 
function cartActions (action) {
	var frm = bw.ie4?document.all['formShopCart']:document.getElementById('formShopCart') ;
	frm.func.value = action ;
	frm.method = "POST" ;
	frm.submit () ;		
}
// remove item
function removeItem (item_id) {
	var frm = bw.ie4?document.all['formShopCart']:document.getElementById('formShopCart') ;
	frm.func.value = 'remove' ;
	frm.item_id.value = item_id ;
	frm.method = "POST" ;
	frm.submit () ;		
}