function VDM_getRefToDiv(divID,oDoc) {
		if( !oDoc ) { oDoc = document; }
		if( document.layers ) {
			if( oDoc.layers[divID] ) { return oDoc.layers[divID]; } else {
				//repeatedly run through all child layers
				for( var x = 0, y; !y && x < oDoc.layers.length; x++ ) {
					//on success, return that layer, else return nothing
					y = getRefToDiv(divID,oDoc.layers[x].document); }
				return y; } }
		if( document.getElementById ) {
			return document.getElementById(divID); }
		if( document.all ) {
			return document.all[divID]; }
		return false;
	}
	
	
	
	function VDM_Toogle_Div(div_1, div_2)
		{
	
			if (VDM_getRefToDiv(div_1).style.display == "none")
				{
				VDM_getRefToDiv(div_1).style.display = "block";
				VDM_getRefToDiv(div_2).style.display = "none";
				}
			else
				{
				VDM_getRefToDiv(div_2).style.display = "block";
				VDM_getRefToDiv(div_1).style.display = "none";
				}
		}
	
	

	function VDM_Set_Hidden_Field_Value (id, value)
		{
			hidden_field = VDM_getRefToDiv(id);
			hidden_field.value = value;
		}