var current_sub='';
var current_sub2='';	
var current_img='';

function hideDivs(sub_menu,sub_menu2){
	if(current_sub!='' && current_sub!=sub_menu){
		changeObjectVisibility(current_sub,'hidden');
		current_sub='';
	}			
	if(current_sub2!='' && current_sub2!=sub_menu2){
		changeObjectVisibility(current_sub2,'hidden');
		current_sub2='';
	}			
}

function show(sel_img,sub_menu,sub_menu2){
	changeObjectVisibility(current_sub,'hidden');
	
	current_sub=sub_menu;
	current_img=sel_img;

	current_sub2=sub_menu2;

	moveXY(sub_menu,getImageLeft(sel_img) + 22,getImageTop(sel_img)+14);
	moveXY(sub_menu2,getImageLeft(sel_img) + 22,getImageTop(sel_img)+14);
	changeObjectVisibility(sub_menu,'visible');
	changeObjectVisibility(sub_menu2,'visible');
}

function showDesc(sel_img,sub_menu){
	changeObjectVisibility(current_sub,'hidden');
	
	current_sub=sub_menu;
	current_img=sel_img;

	moveXY(sub_menu,getImageLeft(sel_img),getImageTop(sel_img)+1);
	changeObjectVisibility(sub_menu,'visible');
}

String.prototype.right = function (numOf) { 
	var tmp = "";
	for (i=this.length-numOf; i<this.length; i++) {
		tmp += this.charAt(i);
	}
	return tmp;
};
		
function validDOC(docSrc){
	var isValid=false;

	for(x=0;x<validExt.length;x++){
		if(docSrc.right(validExt[x].length)==validExt[x]){
			isValid=true;
			break;
		}
	}
	
	return isValid;
}