var fDesc=new Array();

fDesc[1] = "drawings of almost any complexity. You can add points, lines, vectors, polygons, circles, angles, text and even images from files (.gif, .jpg, .png, .tiff) to your drawings.";
		fDesc[2] = "In this case you are going to travel to the jungle to meet an ancient culture, the Aztec in South America, this people left us a lot of great buildings, an incredible culture and a lot of mysteries. They had an extraordinary knowledge of astronomy, mathematics and science.";
		fDesc[3] = "users to share their processing power with the SETI@HOME initiative. It used volunteers' computers to analyze recordings of radio transmissions from outer space. However, nowadays, several projects can be added to the client.";
		fDesc[4] = "Graphs can be created using different colors and styles. You can use standard functions or parameter functions to draw a graph. You can customize any axis, it's maximum limit, lower limit, grid units for every axis individually.";
		fDesc[5] = "combines all the features of a professional mathematics package with the simplicity of an easy to learn windows interface. It provides user-friendly help and tutorials to guide you through the easy and fun process of mastering GraphCalc.";
		fDesc[6] = "distinctive characteristic: is intended to be used by a wide public with very different mathematical skills and for pretty different goals, from students to highly qualified professionals.";
		fDesc[7] = "problem entry and content creation: Document mode and Worksheet mode. Both modes have respective advantages and you can easily switch from one mode to the other for maximum flexibility.";
		fDesc[8] = "are entered in a sheet. In there you can freely add, edit and execute all calculations.";
		fDesc[9] = "some others are trials that you can buy separately if you wish. The free tools are unit converter, matrix algebra, determinant, refraction of rays, ph value, number system, progressions, permutation combination, and molecular weight.";
		fDesc[10] = ", measurement, money, problem solving and more.";
		fDesc[11] = "High school students. It includes Graph plotter, Analytical geometry, Matrix algebra, Equation solver, Triangle solver, Unit converter, Refraction of rays, Lens and mirrors, Color theory, Transverse waves, Radioactive decay, Periodic table, Gas Laws etc.";
		fDesc[12] = "multiplication tables is difficult but also is necessary for basic education. Some children hate mathematics because it is difficult to memorize tables, but this game helps to develop interest in maths.";
		fDesc[13] = "mathematics from the primary school level. It has a very simple user interface. Although the game is restricted to numbers between 1and 12, the way of teaching the elementary mathematical skills of addition and multiplication is very interesting to children.";
		fDesc[14] = ", decimals, and currency. Control how theworksheet will look with customizing features that let you change th...";
		fDesc[15] = "money, problem solving and more.";
		
function tCollapseAll(maxID)
{
	document.getElementById("alls_action").innerHTML = "<span id=\"exp1\" onclick=\"JavaScript:tExpandAll(" + maxID + ");\">Expand descriptions</span>";
		
	var id=1;
	for (id=1; id <= maxID; id++) 
	{
		if (document.getElementById("desc_" + id))
			tShowHide(id, 2);
	}
}

function tExpandAll(maxID)
{
	document.getElementById("alls_action").innerHTML = "<span id=\"exp2\" onclick=\"JavaScript:tCollapseAll(" + maxID + ");\">Collapse descriptions</span>";

	var id=1;
	for (id=1; id <= maxID; id++) 
	{
		if (document.getElementById("more_" + id))
			tShowHide(id, 1);
	}
}

function tShowHide(id, show)
{
	var s = document.getElementById("more_" + id);

	if ((s.innerHTML!=fDesc[id] || show==1) && show!=2)
	{
		s.innerHTML = fDesc[id];
	}
	else
	{
		s.innerHTML = '...';
	}
}