how to print popup window in zk

<center flex="true" autoscroll="true">
			<div>
				
				Please open/close the +/- button, to see product details
	properly.
	<grid  fixedLayout="false" width="600px" forEach="${ads}"  mold="paging" pageSize="2">
		<columns>
			<column width="25px" />
			<column>Product Name</column>
			<column>Brand</column>
			<column>Category</column>
		</columns>
		<rows>
			<row>
				<detail  open="true" >
					<hbox>
						<image width="150px" height="150px" src="/img/camcord.jpeg" />
						<vbox>
							<label value="Item Specifics - Item Condition" style="font-weight:bold;font-style: italic;" />
							<hbox>
								<label value="Product Code:" />
								 <label  value="${each.product.product_id}" style="font-weight:bold;" />
							</hbox>
							<hbox>
								<label value="Product Name:" />
								<label value="${each.product.product_name}" style="font-weight:bold;" />
							</hbox>
							<hbox>
								<label value="Product Brand:" />
								<label value="${each.product.product_brand}" style="font-weight:bold;" />
							</hbox>
							<hbox>
								<label value="Terms  Conditions :" />
								<label value="${each.offer_desc}" style="font-weight:bold;" />
							</hbox>
							
					<button id="${each.product.product_id}" label="print"  onClick="getLabId(self)" />		
		</vbox>
					</hbox>
				</detail>
				<label value="${each.product.product_name}" />
				<label style="color:green;float:right;" value="${each.product.product_brand}" />
				<label value="${each.product.prodcat_main.category_desc}" />
			</row>
		</rows>
		
	</grid>
	</div>
			</center>