function displayMe(){
elem = document.getElementById("toggleGrid");
 elem.style.display = "inline";
 elem.onclick = sxform;
}

function sxform(){
var id = 'container';
var prop = 'background';
var val = 'url(http://strucke.com/layout/blueprint/src/grid.png)';
var el=typeof id=='object'? id : document.all? document.all[id] : document.getElementById(id);
if(el.holder==val)
el.holder=el.style[prop]='';
else
el.style[prop]=el.holder=val;
}

window.onload = displayMe;