if (document.images) {  // If the image object exists

    off = new Array(2)
	on = new Array(2)
    screenon = new Array(2)

    on[1] = new Image();
    on[1].src = "pics/viewcart.gif";
    on[2] = new Image();
    on[2].src = "pics/security.gif";
   
 

    screenon[1] = new Image();
    screenon[1].src = "pics/viewcart_1st.gif";
    screenon[2] = new Image();
    screenon[2].src = "pics/security_1st.gif";

   


    off[1] = new Image();
    off[1].src = "pics/viewcart_1st.gif";
    off[2] = new Image();
    off[2].src = "pics/security_1st.gif";
 
   
}

function screenOn(screenName,num) {
	if (document.images) {
	    document[screenName].src = on[num].src;
    }
}



function screenOff(screenName,num) {
	if (document.images) {
		document[screenName].src = off[num].src;
    }
}