function m_over()
 {
document.getElementById('a1').src="images/button_1hover.jpg"; 
}
 function m_out()
 {
document.getElementById('a1').src="images/button_1.jpg"; 
}

function m_over1()
 {
document.getElementById('a2').src="images/button_1hover.jpg"; 
}

function m_out1()
{
document.getElementById('a2').src="images/button_1.jpg";  
}

function m_over2()
 {
document.getElementById('a3').src="images/button_1hover.jpg"; 
}

function m_out2()
{
document.getElementById('a3').src="images/button_1.jpg";  
}

function m_over3()
 {
document.getElementById('img1').src="images/welcome_hover.jpg"; 
}

function m_out3()
{
document.getElementById('img1').src="images/welcome.jpg";  
}

function m_over4()
 {
document.getElementById('img2').src="images/aims_hover.jpg"; 
}

function m_out4()
{
document.getElementById('img2').src="images/aims.jpg";  
}

function m_over5()
 {
document.getElementById('img3').src="images/activities_hover.jpg"; 
}

function m_out5()
{
document.getElementById('img3').src="images/activities.jpg";  
}