function emailCheck(s) {
	var reg = /^[0-9a-z\.-]+@([0-9a-z-]+\.)+[a-z]{2,4}$/i;
	if(!reg.test(s)) {
		return false;
	};
	return true;
}

function urlCheck(s) {
	var reg = /^(http:\/\/|www\.|[0-9a-z\.-])([0-9a-z-]+\.)+[a-z]{2,4}$/i;
	if(!reg.test(s)) {
		return false;
	};
	return true;
}

function dispalyPreview(title,content) {
	str = '';
	if (title == '') title = 'Titulo del Link';
	if (content == '') content = 'La descripcion de tu link aqui...';
	var cont = String(content);
	//alert(content.toString().length);
	content = content.toString();
	if (content.lenght > 200) {
		content = content.substr(0,200);
		content = content.substr(0,lastIndexOf(' ')) + ' ...';
	}
	var newtext = content.split('\n');
	var ncontent = '';
	var len = newtext.length < 5 ? newtext.length : 5;
	for (var i = 0; i < len; i++) {
		ncontent += newtext[i] + '<br />';
	}
	str += '\t\t\t\t<div class="item_name">' + title + '</div>\n';
	str += '\t\t\t\t<div class="item_text">' + ncontent + '</div>\n';
	document.getElementById('preview').innerHTML = str;
	return;
}

function checkAmo(obj) {
	var amo = parseInt(obj.value);
	if (isNaN(amo)) {
		alert('No es un numero!');
		obj.value = '1';
		obj.focus();
		return false;
	}
	if (amo > 4) {
		document.getElementById('afrm').elements['DL1Name'].disabled = false;
		document.getElementById('afrm').elements['DL1URL'].disabled = false;
		document.getElementById('afrm').elements['DL2Name'].disabled = false;
		document.getElementById('afrm').elements['DL2URL'].disabled = false;
		document.getElementById('afrm').elements['DL3Name'].disabled = false;
		document.getElementById('afrm').elements['DL3URL'].disabled = false;
	} else {
		document.getElementById('afrm').elements['DL1Name'].disabled = true;
		document.getElementById('afrm').elements['DL1URL'].disabled = true;
		document.getElementById('afrm').elements['DL2Name'].disabled = true;
		document.getElementById('afrm').elements['DL2URL'].disabled = true;
		document.getElementById('afrm').elements['DL3Name'].disabled = true;
		document.getElementById('afrm').elements['DL3URL'].disabled = true;
		document.getElementById('afrm').elements['DL1Name'].value = '';
		document.getElementById('afrm').elements['DL1URL'].value = '';
		document.getElementById('afrm').elements['DL2Name'].value = '';
		document.getElementById('afrm').elements['DL2URL'].value = '';
		document.getElementById('afrm').elements['DL3Name'].value = '';
		document.getElementById('afrm').elements['DL3URL'].value = '';
	}
}

function frm_send() {
	var frm = document.getElementById('afrm').elements;
	if (!emailCheck(frm['SenderEmail'].value) || frm['SenderEmail'].value == '') {
		alert('Correo electronico no valido!');
		frm['SenderEmail'].focus();
		return false;
	};
	if (frm['Title'].value == '') {
		alert('El campo de la titulo esta vacio!');
		frm['Title'].focus();
		return false;
	};
	if (/*!urlCheck(frm['URL'].value ) ||*/ frm['URL'].value == '') {
		alert('Correo URL no valido!');
		frm['URL'].focus();
		return false;
	}
	if (frm['Body'].value == '') {
		alert('El campo de la descripcion esta vacio!');
		frm['Body'].focus();
		return false;
	};
	if (frm['code'].value == '') {
		alert('Codigo de seguridad no valido!');
		frm['code'].focus();
		return false;
	};
	document.getElementById('afrm').submit();
}