//*** PTViewer built-in functions ***/

// control bar functions
function DoReset()
{
  document.ptviewer.gotoView(0,0,70);
}

function DoAuto()
{
  document.ptviewer.startAutoPan( 0.5, 0.0, 1.0 );
}
function DoUp()
{
  document.ptviewer.startAutoPan( 0.0, 0.1, 1.0 );
}
function DoDown()
{
  document.ptviewer.startAutoPan( 0.0, -0.1, 1.0 );
}
function DoLeft()
{
  document.ptviewer.startAutoPan( -1, 0.0, 1.0 );
}
function DoRight()
{
  document.ptviewer.startAutoPan( 1, 0.0, 1.0 );
}
function DoLeftAuto()
{
  document.ptviewer.startAutoPan( -0.1, 0.0, 1.0 );
}
function DoRightAuto()
{
  document.ptviewer.startAutoPan( 0.1, 0.0, 1.0 );
}
function DoZoomOut()
{
  document.ptviewer.startAutoPan( 0.0, 0.0, 1.025 );
}
function DoZoomIn()
{
  document.ptviewer.startAutoPan( 0.0, 0.0, 1.0/1.025 );
}
function DoStop()
{
  document.ptviewer.stopAutoPan();
}

// mouse over tour menu images
function over() {
    window.event.srcElement.style.filter = "alpha(opacity=100)";
}

function out() {
    window.event.srcElement.style.filter = "alpha(opacity=50)";
}



// preload viewer menu images
//vMenu1 = new Image();
//vMenu1.src = "../images/vt_bar1dw.gif";

//vMenu2 = new Image();
//vMenu2.src = "../images/vt_bar2dw.gif";

//vMenu3 = new Image();
//vMenu3.src = "../images/vt_bar3.gif";

//vMenu4 = new Image();
//vMenu4.src = "../images/vt_bar4dw.gif";

//vMenu5 = new Image();
//vMenu5.src = "../images/vt_bar5dw.gif";

//vMenu6 = new Image();
//vMenu6.src = "../images/vt_bar6dw.gif";

//vMenu7 = new Image();
//vMenu7.src = "../images/vt_bar7dw.gif";

//vMenu8 = new Image();
//vMenu8.src = "../images/vt_bar8dw.gif";