function viewPic(img)
	{ 	
			picfile = new Image(); 
			picfile.src =(img); 
			fileCheck(img); 
	}
	
	function fileCheck(img)
	{ 	
			if( (picfile.width!=0) && (picfile.height!=0) )
			{ 
					makeWindow(img); 
			}
			else 
			{
					funzione="fileCheck('"+img+"')"; 
					intervallo=setTimeout(funzione,50); 
			}
	}
	
	function makeWindow(img)
	{ 	
			ht = picfile.height + 28;
			wd = picfile.width + 20; 
	
			var args= "height=" + ht + ",innerHeight=" + ht;
			args += ",width=" + wd + ",innerWidth=" + wd;
			if (window.screen) 
			{ 
					var avht = screen.availHeight; 
					var avwd = screen.availWidth;
					var xcen = (avwd - wd) / 2; 
					var ycen = (avht - ht) / 2;
					args += ",left=" + xcen + ",screenX=" + xcen;
					args += ",top=" + ycen + ",screenY=" + ycen + ",resizable=no"; 	
			}
			return window.open(img, '', args); 
	}