//basic cube js
function showhide(title_id,content_id,title_on,title_off)
{
	var cont = document.getElementById(content_id);
	var title = document.getElementById(title_id);
	if(cont.style.display == '')
	{
		title.innerHTML = title_on;
		cont.style.display = 'none';
	}
	else
	{
		title.innerHTML = title_off;
		cont.style.display = '';
	}
}

function noteBlocker()
{
setTimeout('document.getElementById(\'harshreality\').style.backgroundImage=\'url(/img/what_have_you_done.gif)\';', 800);
}

function extension_check(filename)
{
var extensions=new Array(".png",".gif",".jpg", ".jpeg");

filename = filename.toLowerCase();

var dot = filename.lastIndexOf("."); 

var fileextension = filename.slice(dot, filename.length)

var validextension = false;

 for(var i=0;i<4;i++)
  {
    if(extensions[i]==fileextension)
	{
	var validextension = true;
	break;
	}
	else
	{
	validextension = false;
	}
  }

	if(validextension == false)
	{
	alert("The type of file you are attempting to upload (" + fileextension + ") is not valid. Please upload a valid file type.\nSee 'Help' for more information.");
	document.getElementById('uploaddiv').style.display = 'none';
	document.frm.thefile.value="";
	}
	else
	{
	// Valid extension, submit the form
	document.getElementById('uploaddiv').style.display = '';
	}

}