YAHOO.namespace("example.container");

function init() {

YAHOO.example.container.panel1 = new YAHOO.widget.Panel("panel1", { width:"750px", visible:false, modal:true, fixedcenter:true,  draggable:false, constraintoviewport:true } ); 
YAHOO.example.container.panel1.render(); 
YAHOO.util.Event.addListener("show1", "click", YAHOO.example.container.panel1.show, YAHOO.example.container.panel1, true);


YAHOO.example.container.panel2 = new YAHOO.widget.Panel("panel2", { width:"350px", visible:false, modal:true, fixedcenter:true, draggable:false, constraintoviewport:true } ); 
YAHOO.example.container.panel2.render(); 
YAHOO.util.Event.addListener("show2", "click", YAHOO.example.container.panel2.show, YAHOO.example.container.panel2, true);

YAHOO.example.container.panel3 = new YAHOO.widget.Panel("panel3", { width:"550px", visible:false, modal:true, fixedcenter:true, draggable:false, constraintoviewport:true } ); 
YAHOO.example.container.panel3.render(); 
YAHOO.util.Event.addListener("show3", "click", YAHOO.example.container.panel3.show, YAHOO.example.container.panel3, true);

}

YAHOO.util.Event.addListener(window, "load", init);