var ventana



function guarda_seleccion() {

	document.form1.action = "verifica_seleccion_productos.php";

	document.form1.submit();			

}



function paginar($pag) {

			document.form1.action = 'verifica_frm_step2.php?action=paginar';

			document.form1.pag.value = $pag;

			document.form1.submit();		

	}



function marca_todos(cuenta) {

        for (var i = 0; i < document.forms[0].length; i++) {

            element = document.forms[0].elements[i]

            if (element.type == "checkbox") {

                element.click();

            }

        }

    }





	

function popup(url,nombre,tam_x,tam_y,bar) {

	if (document.all) { 

		var xMax = screen.width, yMax = screen.height; var xOffset = (xMax - tam_x)/2, yOffset = (yMax - tam_y)/2;

					}

	else { 

		var xMax = window.outerWidth, yMax = window.outerHeight; var xOffset = (xMax - tam_x)/2, yOffset = (yMax - tam_y)/2;

		}

		

	if (ventana != null ) { 

		ventana.close();

	}	

	ventana = window.open(url,nombre,"status=yes,scrollbars="+bar+",resizable=no,height="+tam_y+",width="+tam_x+",screenX="+xOffset+",screenY="+yOffset+",top="+yOffset+",left="+xOffset);

	}







<!--

function open_window(votre_page)

{

	var hauteur_popup=400;

	var H = (screen.height - hauteur_popup) / 2;

	var largeur_popup=500;

	var L = (screen.width - largeur_popup) / 2;

	pop_up = window.open(votre_page,"Popup","status=yes,scrollbars=yes,resizable=no,height="+hauteur_popup+",width="+largeur_popup+",top="+H+",left="+L);

}

//-->





function enviar_formulario(operacion) {

	if (operacion == 'update_global') {

		document.form_rejilla_datos.action = 'popup_ahorra.php?action=update_global';

		document.form_rejilla_datos.submit();

	}

	if (operacion == 'insert_fila') {

		document.form_rejilla_datos.action = 'popup_ahorra.php?action=insert_fila';

		document.form_rejilla_datos.submit();

	}

		if (operacion == 'cerrar') {

		document.form_rejilla_datos.action = 'popup_ahorra.php?action=cerrar';

		document.form_rejilla_datos.submit();

	}



}



function paginar($pag) {

			document.form1.pag.value = $pag;

			document.form1.submit();		

	}

	function frompopupto($pag) {

			window.opener.location.href = $pag;

			window.close();

	}

	

	function orderby($pag,$term,$orden) {

		document.form1.pag.value = $pag;

		document.form1.orden.value = 'order by ' + $term + ' ' + $orden;

		document.form1.submit();		

	}