buttons no background
every browser works fine, firefox not
function change2(image){ //if (event.srcElement.tagName=="BUTTON") event.srcElement.style.backgroundImage="url"+"('img/btlo"+image+".png')" }
'<tr><td style="border-top: 1px solid #7777ff"><button onMouseover="change2(\'3\')" onMouseout="change2(\'_\')" onclick=\'location.href="http://zasms.pl";return false;\' style="background:transparent;border: 0px;background-image:url(img/btlo_.png);font-weight:bold;color:white;width:100pt;line-height:8pt;height:24pt">Serwisy SMS</button>
'+
every browser works fine, firefox not
function change2(image){
//if (event.srcElement.tagName=="BUTTON")
event.srcElement.style.backgroundImage="url"+"('img/btlo"+image+".png')"
}
'<tr><td style="border-top: 1px solid #7777ff"><button onMouseover="change2(\'3\')" onMouseout="change2(\'_\')" onclick=\'location.href="http://zasms.pl";return false;\' style="background:transparent;border: 0px;background-image:url(img/btlo_.png);font-weight:bold;color:white;width:100pt;line-height:8pt;height:24pt">Serwisy SMS</button><br>'+