var getById = (typeof document.getElementById != "undefined");		

function toggleDisplay(obj,display1,display2){

	if(!getById) return;
	
	obj = getRef(obj);
	
	if(obj.style.display == display1)
		obj.style.display = display2;
	else
		obj.style.display = display1;
	
	repaintFix();
}

function showPortfolio(obj) {

    objId = obj;

	if(!getById) return;
	
	obj = getRef(obj);

	obj.style.display = 'block';

	for (var i = 1; i < 7; i++) {
	    var b;

	    if (i != objId.charAt(1)) {
	        document.getElementById('v' + i).style.display = "none";
	    }
	}
	
	repaintFix();
}

function getRef(obj){
	if(getById)
		return(typeof obj == "string") ? document.getElementById(obj) : obj;
}

function repaintFix(obj){ 
	
	if("undefined" == typeof document.body
	  || "undefined" == typeof document.body.style) return;
	
	if(obj == null)
		obj == document.body;
	else obj = getRef(obj);
	
	document.body.style.visibility = "hidden";
	document.body.style.visibility = "visible";
}