function isImage(url){var img=document.createElement("img");img.onload=function(){isImageCallback(url,true)};img.onerror=function(){isImageCallback(url,false)};img.src=url}function isImageCallback(url,result){if(result)if(propaganda==1)escreveFlash(true);else escreveFlash2(true);else if(propaganda==1)escreveFlash(false);else escreveFlash2(false)};