function fieldexists(fieldid){
	fieldid = fieldid.replace("field_", "row_");
	var productElement = document.getElementById(fieldid);
	if(productElement != null){return true;}else{return false;}
}

function fieldisvisible(fieldid){
	var productElement = document.getElementById(fieldid);
	if(productElement.style.display == ''){return true;}else{return false;}
}

function valueisinteger(val){
	if(isNaN(Math.abs(val))){if(val == ''){return '';}else{return val;}}else{return parseInt(val);}
}

function valuetocurrency(val,valtype){
	if(isNaN(Math.abs(val)) || valtype == 'nummer'){return val;}else{return formatCurrency(val);}
}

function getElmVal(ElmId){
	return document.getElementById(ElmId).value;
}

function setElmVal(ElmId, val){
	document.getElementById(ElmId).value = val;
}

function setElmDisplay(ElmId, display){
	document.getElementById(ElmId).style.display = display;
}

function setElminnerHTML(ElmId, HTML){
	document.getElementById(ElmId).innerHTML = HTML;
}