if (document.all) {
	reflager = 'all("';
	refslut = '").style';
	refsize = '").style.height'
	visa = 'visible';
	gom = 'hidden';
} else if (document.layers) {
	reflager = "layers['";
	refslut = "']";
	refsize = "'].clip.bottom"
	visa = 'show';
	gom = 'hide';
} else if (document.getElementById) {
	 reflager = "getElementById('";
     refslut = "').style";
     refsize = "').style.height"
     visa = 'visible';
     gom = 'hidden';
}


function d(lager) {
	eval('document.'+reflager+lager+refslut+'.visibility = "'+gom+'"');
}

function v(lager) {
	eval('document.'+reflager+lager+refslut+'.visibility = "'+visa+'"');
}


function getsize(lager){
    if (document.all){return document.all[lager].clientHeight;}
    if(document.layers){return document.layers[lager].document.height;}
    if(document.getElementById){return document.getElementById(lager).offsetHeight;}
}

function getWidth(lager){
    if (document.all){return document.all[lager].clientWidth;}
    if(document.layers){return document.layers[lager].document.width;}
    if(document.getElementById){return document.getElementById(lager).offsetWidth;}
}

function getHeight(lager){
        if (document.all) return document.all[lager].clientHeight;
        if(document.layers) return document.layers[lager].clip.height;
        if(document.getElementById){return document.getElementById(lager).offsetHeight;}
}

function bytbild(bildNamn, bildSrc){
 eval('document.'+bildNamn+'.src = bildSrc');
}

function centerLayer(layer,xdiff){
	var wWin;		
	if(!document.layers){ 
		wWin = document.body.offsetWidth;	
	}else{ 
		wWin = window.innerWidth;	
	}

	if(wWin > 807){
		wWin = parseInt((wWin-807)/2) + xdiff;
	}else{
		wWin = xdiff;
	}
	eval('document.'+reflager+layer+refslut+'.left = "'+wWin+'"');
}

function empty(obj,teststring){
	if(obj.value==teststring){
			obj.value='';
	}
}

function resetText(obj,teststring){
	if(obj.value==''){
			obj.value=teststring;
	}
}

function checkEmail(email){
	var regexpemail =/^[a-zA-Z0-9\-\.\_]+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,4})(\]?)$/;
	return regexpemail.test(email);
}