function returnObjById( id ){
    if (document.getElementById)
        var returnVar = document.getElementById(id);
    else if (document.all)
        var returnVar = document.all[id];
    else if (document.layers)
        var returnVar = document.layers[id];
    return returnVar;
}


function setclip1(){
	returnObjById('clip2').visibility=false;
	returnObjById('clip3').visibility=false;
	returnObjById('clip1').visibility=true;
}

function setclip1(){
	returnObjById('clip1').visibility=false;
	returnObjById('clip3').visibility=false;
	returnObjById('clip2').visibility=true;
}

function setclip1(){
	returnObjById('clip1').visibility=false;
	returnObjById('clip2').visibility=false;
	returnObjById('clip3').visibility=true;
}


function hideObject(id) {
	        document.getElementById(id).style.visibility = "hidden";
	}

function showObject(id) {
	    document.getElementById(id).style.visibility = "visible";
	}
	
function clip1(){
	hideObject('clip2');hideObject('clip3');showObject('clip1');
}

function clip2(){
	hideObject('clip1');hideObject('clip3');showObject('clip2');
}

function clip3(){
	hideObject('clip1');hideObject('clip2');showObject('clip3');
}