function clearInput( inp, val ) {
	var doin = document.getElementById( inp ) ;
	if( val == doin.value )
		doin.value = '' ;
}

function chp( f, price, pricevat ) {
	if( document.getElementById( 'ver[' + f + ']' ) ) {
		var parent = getElementsByName_iefix( 'div', 'versions' ) ;
		// Loop through the children
		for( var c=0; c < parent.length; c++ ) {
			if( parent[c].className == 'sub' ) {
				parent[c].className = 'hidden';
			}
		}
	
		document.getElementById( 'ver[' + f + ']' ).className = 'sub' ;
		var el = document.getElementsByName( "pc" ) ;
		el[0].id = 'pc[' + f + ']' ;
		document.getElementById( 'prod-price' ).innerHTML = price ;
		document.getElementById( 'prod-pricevat' ).innerHTML = pricevat ;
	}
}

function getElementsByName_iefix(tag, name) {
    
    var elem = document.getElementsByTagName(tag);
    var arr = new Array();
    for(i = 0,iarr = 0; i < elem.length; i++) {
         att = elem[i].getAttribute("name");
         if(att == name) {
              arr[iarr] = elem[i];
              iarr++;
         }
    }
    return arr;
}