function view(elemId, elemType){
	var elemClass = 'gallary';
	var elems = document.getElementsByTagName(elemType);
	var elemLength = elems.length;
	for(var i=0; i<elemLength; i++){
		if(elems[i].className == elemClass){
			if(elems[i].id == elemId){
				elems[i].style.display = "block";
			}else{
				elems[i].style.display = "none";
			}
		}
	}
}