var el="header-cell";
	var bgimg=new Array("images/consol-hdr-bg-01.jpg");
	var random=Math.round((bgimg.length-1)*Math.random());
	var cssStr="."+el+" { background: url("+bgimg[random]+") top right; background-repeat: no-repeat; } ";
	var style=document.createElement("style");	
	style.setAttribute("type","text/css");
	if(style.styleSheet){
		style.styleSheet.cssText=cssStr;
	}
	else{
		var cssText=document.createTextNode(cssStr);
		style.appendChild(cssText);
	}
	
	document.getElementsByTagName("head")[0].appendChild(style);