function popUp(url, title) {
   popupWin = window.open(url, title, 'resizable=1,scrollbars=1,width=450,height=500,top=50,left=50')
}

function popUp2(url, title) {
   popupWin = window.open(url, title, 'resizable,scrollbars,width=300,height=200,top=50,left=50')
}

function emailadres_mt(domein, naam, datum) { // to hide email addresses from spambots
  document.write ("<a href=\"mailto:" + naam + "@" + domein + "\" title=\"send email\">"+datum+"</a>")
  }

function toggleBox(szDivID) { // 1 visible, 0 hidden
    if (document.layers) {   //NN4+
    	var iState = document.layers[szDivID].visibility;
		document.layers[szDivID].visibility = iState=="hide"? "show" : "hide";
        } else if (document.getElementById)  {   //gecko(NN6) + IE 5+
        var obj = document.getElementById(szDivID);
        var iState = obj.style.visibility;
        obj.style.visibility = iState=="hidden" ? "visible" : "hidden";
        } else if (document.all) {      // IE 4
       	var iState = document.all[szDivID].style.visibility;
        document.all[szDivID].style.visibility = iState=="hidden" ? "visible" : "hidden";
    	}
   	return iState;
	}

function fadeText(ID, color) // 1 visible, 0 hidden
{
    if(document.layers)    //NN4+
    {
		document.layers[ID].color = color;
    }
    else if(document.getElementById)      //gecko(NN6) + IE 5+
    {
        var obj = document.getElementById(ID);
        obj.style.color = color;
    }
    else if(document.all)       // IE 4
    {
        document.all[ID].style.color = color;
    }
}

function pausecomp(Amount)
{
 	d = new Date() //today's date
	 while (1)
 	{
		mill=new Date() // Date Now
		diff = mill-d //difference in milliseconds
		if( diff > Amount ) {break;}
	}
}

var min_color = 33;
var max_color = 255;
//var i = 0;
var dir = "up";

function blink( ID ) {
	//var result = toggleBox(ID);
	//( result == "show" || result=="visible") {
		//pausecomp(1800);
	//}
	var step = (eval("max_color_"+ID)-eval("min_color_"+ID))/40;
	//alert(step);
	var i = eval("i"+ID );
	//alert( ID );
	if( i <= eval("min_color_"+ID) ) { eval("dir_"+ID+"=\"up\""); i+=step; }
	else if( eval("dir_"+ID) == "up" && i<eval("max_color_"+ID) ) { i+=step; } 
	else if( i >= eval("max_color_"+ID) ) { eval("dir_"+ID+"=\"down\""); i-=step; }
	else if( eval("dir_"+ID)=="down" && i>eval("min_color_"+ID) ) {i-=step;}
	i = Math.round(i);
	color =  'rgb('+i+','+i+','+i+')';
	fadeText(ID, color);
	eval("i"+ID + "= i;");
	//alert( i );
}