function changeimg(  element_id ,  path , imagename   ) {
	var objekt = document.getElementById(element_id);
	objekt.src = path + "/" +  imagename; 
}

function pro( e ) {
 if ( window.screen.width < 1100  ) {
	 e.main.style.name= "main1024"; 
	}
	else {
	 e.main.style.name= "main1280"; 
	}
	alert("in process"); 
}