// JavaScript Document
function MM_preloadImages() { //v3.0

  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();

    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)

    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}

}



function MM_swapImgRestore() { //v3.0

  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;

}



function MM_findObj(n, d) { //v4.0

  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {

    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}

  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];

  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);

  if(!x && document.getElementById) x=document.getElementById(n); return x;

}



function MM_swapImage() { //v3.0

  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)

   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}

}

function emailvalidation(entered, alertbox)
{
with (entered)
{
apos=value.indexOf("@");
dotpos=value.lastIndexOf(".");
lastpos=value.length-1;
if (apos<1 || dotpos-apos<2 || lastpos-dotpos>3 || lastpos-dotpos<2)
{if (alertbox) {alert(alertbox);} return false;}
else {return true;}
}
}

function emptyvalidation(entered, alertbox)
{
with (entered)
{
if (value==null || value=="")
{if (alertbox!="") {alert(alertbox);} return false;}
else {return true;}
}
}

function formvalidation(thisform)
{
with (thisform)
{
if (emptyvalidation(PresentationTitle,"Please enter your presentation title")==false) {PresentationTitle.focus(); return false;};
if (emptyvalidation(PresentationCategory,"Please enter your presentation category")==false) {PresentationCategory.focus(); return false;};
if (emptyvalidation(Name,"Please enter your name")==false) {Name.focus(); return false;};
if (emptyvalidation(Title,"Please enter your title")==false) {Title.focus(); return false;};
if (emptyvalidation(Institution,"Please enter your institution")==false) {Institution.focus(); return false;};
if (emptyvalidation(Address,"Please enter your address")==false) {Address.focus(); return false;};
if (emptyvalidation(OfficePhone,"Please enter your office phone")==false) {OfficePhone.focus(); return false;};
if (emptyvalidation(HomePhone,"Please enter your home phone")==false) {HomePhone.focus(); return false;};
if (emailvalidation(Email,"Please enter your email")==false) {Email.focus(); return false;};
if (emptyvalidation(ProgramAbstract,"Please enter your program abstract")==false) {ProgramAbstract.focus(); return false;};
if (emptyvalidation(ProgramSummary,"Please enter your program summary")==false) {ProgramSummary.focus(); return false;};
}
}