function load(directory){
    if(document.images){
        names=load.arguments
        pictures=new Array;
        for (z=1;z<names.length;z++){
            pictures[z]=new Image;
            pictures[z].src=directory+names[z];
        }
    }    
}

function loadjpgs(directory){
    if(document.images){
        names=load.arguments.slice(1);
        pictures=new Array;
        for (z=0;z<names.length;z++){
            pictures[z]=new Image;
            pictures[z].src=directory+names[z]+".jpg";
        }
    }    
    
}

function loadgifs(directory){
    if(document.images){
        names=load.arguments.slice(1);
        pictures=new Array;
        for (z=0;z<names.length;z++){
            pictures[z]=new Image;
            pictures[z].src=directory+names[z]+".gif";
        }
    }    
}

function load_on_offs(directory){
    if(document.images){
        names=load.arguments.slice(1);
        pictures=new Array;
        for (z=0;z<names.length;z++){
            pictures[z]=new Image;
            pictures[z].src=directory+names[z]+"on.gif";
            pictures[z].src=directory+names[z]+"off.gif";
        }
    }    
}

 



function toggle(imagename,src1,src2){      
    if(document.images && document.images[imagename]){
        image1=new Image;
        image1.src=src1;
        if(document.images[imagename].src != image1.src){
            document.images[imagename].src = image1.src
        }
        else{
            document.images[imagename].src=src2
        }
    }
}


function show(imagename,source){
    if(document.images && document.images[imagename]){
        document.images[imagename].src=source
    }
}