// JavaScript Document

onload = function()
{
	var h = 0;
	var l = 0;
	var ht = 0;
   var main = document.getElementById( 'main' );

   if( main.style.offsetHeight )
		h = main.style.offsetHeight;
	else if( main.style.pixelHeight )
		h = main.style.pixelHeight;
   else
		h = main.clientHeight;

   var left = document.getElementById( 'main-left' );

   if( left.style.offsetHeight )
		l = left.style.offsetHeight;
	else if( left.style.pixelHeight )
		l = left.style.pixelHeight;
   else
		l = left.clientHeight;

   var right = document.getElementById( 'main-right' );

   if( right.style.offsetHeight )
		r = right.style.offsetHeight;
	else if( right.style.pixelHeight )
		r = right.style.pixelHeight;
   else
		r = right.clientHeight;

	ht = Math.max( l, r, h );
	
	if( ht < 400 )
		ht = 400;
	
	document.getElementById( 'main-left' ).style.height =  ht;
	document.getElementById( 'main-right' ).style.height =  ht;
	document.getElementById( 'main' ).style.height =  ht;
	
	if( document.getElementById( "nav" ) )
	{
		document.getElementById( 'nav' ).style.height =  ht - 54;
	}

}

function confirmDelete()
{
	var agree=confirm("Are you sure you wish to delete this entry?");
	if (agree)
		return true ;
	else
		return false ;
}

function confirmClassDelete()
{
	var agree=confirm("THIS ACTION WILL DELETE THE ENTIRE CLASS!  Are you sure you want to delete this class?");
	if (agree)
		return true ;
	else
		return false ;
}

function resizePage( addHeight )
{
	var h = 0;
	var l = 0;
	var ht = 0;
	var y = addHeight * 1;
	
   var main = document.getElementById( 'main' );

   if( main.style.offsetHeight )
		h = main.style.offsetHeight;
	else if( main.style.pixelHeight )
		h = main.style.pixelHeight;
   else
		h = main.clientHeight;

   var left = document.getElementById( 'main-left' );

   if( left.style.offsetHeight )
		l = left.style.offsetHeight;
	else if( left.style.pixelHeight )
		l = left.style.pixelHeight;
   else
		l = left.clientHeight;

   var right = document.getElementById( 'main-right' );

   if( right.style.offsetHeight )
		r = right.style.offsetHeight;
	else if( right.style.pixelHeight )
		r = right.style.pixelHeight;
   else
		r = right.clientHeight;
		
	ht = Math.max(l, r, h );
	
	ht = ht + y;
	
	document.getElementById( 'main-left' ).style.height =  ht;
	document.getElementById( 'main-right' ).style.height =  ht;
	document.getElementById( 'main' ).style.height =  ht;
	
	if( document.getElementById( 'nav' ) != null )
	{
		document.getElementById( 'nav' ).style.height =  ht;
	}

}