function abrir (pag, nombre, w, h)
{
	posleft = (screen.availWidth / 2) - (w / 2);
	postop = (screen.availHeight / 2) - (h / 2);
	remote = window.open(pag,nombre,'width=' + w +',height=' + h + ',alwaysRaised=1,resizable=0,personalbar=0,left=' + posleft + ',top=' + postop);

//	remote = window.open('', 'BIWE','width=400,height=115,resizable=1');
	if (remote != null) {
	    if (remote.opener == null) 
		  remote.opener = self;
	    else		
	          remote.opener = window.parent;
//        remote.location.href = pag;
	}

}


function abrirChat()
{
	abrir ("http://www.valledupar.com/chat/chat2007.php", "chat", 790, 579);

}

function abrirChat2()
{
	abrir ("http://www.valledupar.com/chat/chat2007xyz.php", "chat", 790, 579);

}

function abrirChat3()
{
	abrir ("http://www.valledupar.com/chat/chat2007xyzG.php", "chat", 790, 579);

}

function abrirChat4()
{
	abrir ("http://www.valledupar.com/chat/chat2007prueba1.php", "chat", 790, 579);

}