// JavaScript Document

/***********************************************
* Hide and Unhide Elements Dynamically
* Source: http://www.ghacks.net/2009/01/15/using-javascript-to-hide-and-unhide-elements-dynamically
***********************************************/

function display(action, id)
{
	if (action == 'show')
	{
		document.getElementById("explanation"+id).style.display = "block";
		document.getElementById("link"+id).href= "javascript:display('hide', "+id+")";
		//document.getElementById("link"+id).innerHTML = "More...";
	}

	if (action == 'hide')
	{
		document.getElementById("explanation"+id).style.display = "none";
		document.getElementById("link"+id).href= "javascript:display('show', "+id+")";
		//document.getElementById("link"+id).innerHTML = "More...";
	}
}


/***********************************************
* Rollover Image
* Source: Dreamweaver CS5
***********************************************/

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_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_findObj(n, d) { //v4.01
	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 && d.getElementById) x=d.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];}
}


/***********************************************
* Form submit on enter
* Source: http://www.java2s.com/Code/JavaScript/Form-Control/SubmitaformViaEnter.htm
***********************************************/

function submitViaEnter(evt) {
    evt = (evt) ? evt : event;
    var target = (evt.target) ? evt.target : evt.srcElement;
    var form = target.form;
    var charCode = (evt.charCode) ? evt.charCode :
        ((evt.which) ? evt.which : evt.keyCode);
    if (charCode == 13) {
        if (validateForm(form)) {
            form.submit();
            return false;
        }
    }
    return true;
}