function ventana(c, width, height)
    {
    if(width==null) width=600;
    if(height==null) height=450;
    window.open(c ,"popWindow", "scrollbars=yes,location=no,menubar=no,width="+width+",height="+height)
}

function ventana2(c)
	{
	window.open(c ,"popWindow", "scrollbars=yes,location=no,menubar=no,width=600,height=450")
}

function ventana3(c)
	{
	window.open(c ,"popWindow", "scrollbars=no,location=no,menubar=no,width=340,height=250")
}

function ventana4(c)
	{
	window.open(c ,"popWindow", "scrollbars=yes,location=no,menubar=no,width=410,height=300")
}

function ventanac(c)
	{
	window.open(c ,"popWindow", "scrollbars=no,location=no,menubar=no,width=260,height=150")
}