// swap input button for disabled img onsubmit - emulate disabled button

function replaceImg() {
var fenabled = getElementsByClass(document, 'span','enabled');
var fdisable = getElementsByClass(document,'span','disabled');
if(fenabled) 
{
	for(x=0; x < fenabled.length; x++) { 
       fenabled[x].style.display="none";
    }
	for(p = 0; p < fdisable.length; p++) { 
       fdisable[p].style.display="inline";
    }
} 
}