function MM_preloadImages() { //v3.0
    var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function emailOk (email) {
    var regexp_email = /^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*\.?$/;
    email = email.replace( /^\s+/, "");
    email = email.replace( /\s+$/, "");
    if (!regexp_email.test (email)) {
        return false;
    }
    return true;
}
function trim (field) {
	field = field.replace( /^\s+/, "");
	field = field.replace( /\s+$/, "");
	if (field.length == 0) {
		return false;
	}
	return true;
}
function menuHover () {
    var elements = document.getElementById("menu").getElementsByTagName("li");
    for (var i=0; i<elements.length; i++) {
		elements[i].currentClass = elements[i].className;
        elements[i].onmouseover=function() {
			this.className+=" sfhover";
        }
		elements[i].onmouseout=function() {
            this.className = this.currentClass;
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", menuHover);

function hideLayer(whichLayer) {
    if (document.getElementById) {
        document.getElementById(whichLayer).style.display = "none";
    } else if (document.all) {
        document.all[whichlayer].style.display = "none";
    } else if (document.layers) {
        document.layers[whichLayer].display = "none";
    }
}

function showLayer(whichLayer) {
    if (document.getElementById) {
        document.getElementById(whichLayer).style.display = "block";
    } else if (document.all) {
        document.all[whichlayer].style.display = "block";
    } else if (document.layers) {
        document.layers[whichLayer].display = "block";
    }
}

function showTab (layer) {
    for (i=0; i<tabs.length; i++) {
        tab = document.getElementById('tab_'+tabs[i]);
        if (tabs[i] == layer) {
            tab.className = tab_class_active;
            showLayer ('text_'+tabs[i]);
            current_layer = 'text_'+tabs[i];
          } else {
            tab.className = tab_class;
            hideLayer ('text_'+tabs[i]);
        }
    }
}
function initScroll (layer) {
    if (document.getElementById) {
		container = document.getElementById(layer);
	} else {
		container = document.all[layer];
	}
}

function moveLayer (dir)
{
    layer = current_layer;
    if (document.getElementById) {
		object = document.getElementById(layer);
	} else {
		object = document.all[layer];
	}
	
	height = object.offsetHeight;
	container_height = container.offsetHeight;
	
	if (dir==1 && parseInt(object.style.top) < 0) {
		object.style.top = (parseInt(object.style.top) + (inc*dir)) + "px";
	} else if (dir==-1 && (height + parseInt(object.style.top)) >= container_height) {
		object.style.top = (parseInt(object.style.top) + (inc*dir)) + "px";
	}
    timer = setTimeout("moveLayer("+dir+");", delay);
}