function blockDoubleClick()
{
	var node_list = document.getElementsByTagName('input');
	for (var i = 0; i < node_list.length; i++) {
    	var node = node_list[i];
    	if (node.getAttribute('type') == 'submit' && node.getAttribute('class') != 'unblock') {
        	node.setAttribute('onClick',"submission(this);");
    	}
	} 
}	

function submission(node)
{
	node.disabled = 'true';
	node.value = 'Procesando...';
	node.form.submit();
}