function change1() 
{ 
parent.topFrame.location="topframe1.html"; 
parent.leftFrame.location="left1_instruct.html"; 
} 

function change2() 
{ 
parent.topFrame.location="topframe2.html"; 
parent.leftFrame.location="left2_advanced.html"; 
} 

function change3() 
{ 
parent.topFrame.location="topframe3.html"; 
parent.leftFrame.location="left3_query.html"; 
} 

function change4() 
{ 
parent.topFrame.location="topframe4.html"; 
parent.leftFrame.location="left4_other.html"; 
} 

function change5() 
{ 
parent.topFrame.location="topframe5.html"; 
parent.leftFrame.location="left5_results.html"; 
} 

function contact() 
{ 
parent.mainFrame.location="../../loc.html"
}