Mi codigo:
Código:
<script>
function validateForm()
{
var x=document.forms["myForm"]["busca"].value;
if (x==null || x=="")
{
alert("Ingrese usuario");
return false;
}
}
function validateForm2(){
window.open('', 'popup', 'width = 1200, height = 180000000, scrollbars=YES');
}
</script>
Código HTML:
<p> <form name ="myForm" method ="post" action="busqueda1.php" id="cdr" target="popup" onsubmit="validateForm();validateForm2()"> <div id="buscar_usuario"><h3>BUSCAR USUARIO</h3></div> <input name="busca" type="text" id="busqueda"> <input type="submit" name="Submit" value="buscar" /> </p> </form>


