var attr1 = "toolbar=0,location=0,directories=0,menubar=0,scrollbars,resizable,width=500,height=450,copyhistory=0";

function ipre_load(inum, iname){
    if(document.images){
        for( i=0; i<inum; i++ ){
            eval('image'+i+'on = new Image();');
            eval('image'+i+'on.src = \"images/'+iname+'_'+i+'_on.gif\"');
            eval('image'+i+'off = new Image();');
            eval('image'+i+'off.src = \"images/'+iname+'_'+i+'_off.gif\"');
        }
    }
}

function turnOn(num){
    if(document.images){
        document['image'+num].src = eval('image'+num+'on.src');
    }
}

function turnOff(num){
    if(document.images){
        document['image'+num].src = eval('image'+num+'off.src');
    }
}

function magicValidator(theForm, num){
    var prompt;
    for( i=0; i<num; i++ ){
        if( (prompt = theForm.elements[i].id) && theForm.elements[i].value == "" ){
            alert("Please enter a value for the \""+prompt+"\" field.");
            theForm.elements[i].focus();
            return (false);
        }
    }
    return (true);
}

function myWindow(url,win_attr) { 
    var newwin=window.open(url,'',win_attr); 
    return false;
}