//show or hide please wait screens while updating maps.

//will become an interval for concatenating periods to end of sentance
//to show map is working in please wait splash screen
var periodConcatInterval;
var noOfPeriods = 0;
var drawingLinks = false; //make sure not to hide please wait until links done drawing


function showPleaseWaitScreen(waitText){
    //show please wait screen depending on what user does - either for 
    //first time or to update map
   // alert("in show Please wait screen");
    var pleaseWaitScreen = new getObj('pleaseWaitScreen');
    
    var spanPleaseWaitText = new getObj('pleaseWaitText');
    spanPleaseWaitText.obj.firstChild.nodeValue = waitText;
    
    pleaseWaitScreen.obj.style.visibility = "visible";
}
		
function hidePleaseWaitScreen(){
    //hide and reset please wait screen 
    //alert("in hide wait screen");
    var pleaseWaitScreen = new getObj('pleaseWaitScreen');
    
    if (!drawingLinks) {
        pleaseWaitScreen.obj.style.visibility = "hidden";
    
        var spanPleaseWaitText = new getObj('pleaseWaitText');
        spanPleaseWaitText.obj.firstChild.nodeValue = "";
    }

}