function display_to_block(current,e,div_id)
{
	if(document.getElementById)
	{
		elml=current
		elm=document.getElementById(div_id)
		elm.style.display="block"
	}
}

function display_to_none(current,e,div_id) {

	if(document.getElementById) 
     	{
		elml=current
		elm=document.getElementById(div_id)
        	elm.style.display="none"
	}
}

function zindex(div_id, z_level) {

	var div;
	div = document.getElementById(div_id); 
 
	if(navigator.appName.indexOf("Explorer") != -1) 
	{
		div.style.zIndex = z_level; 
	}
}