add: img.alt = alternate; 
context: function FileUploadControl_swapImage(firedobj) {		var parts = firedobj.value.split('.');	var imgPath = this.images["unknown"];		if (parts.length !=1) {			var extension = parts[parts.length -1].toLowerCase();			if (this.images[extension]) {				imgPath = this.images[extension];			}	}			var row = this.getRow(firedobj);		row.childNodes[0].style.display='';	row.childNodes[1].colSpan=1;	var img = row.childNodes[0].childNodes[0];	img.src = imgPath;	img.style.visibility="visible";}
meta: 5314	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5314/81fd7c619402adff4807899dba30fe0322adb1ef/FileUploadControl.js/clean/www/extras/FileUploadControl.js